A grasp is an act of taking, holding or seizing firmly with (or as if with) the hand . An example of a grasp is the handshake , wherein two people grasp one of each other's like hands.
120-513: In zoology particularly, prehensility is the quality of an appendage or organ that has adapted for grasping or holding. Grasping is often preceded by reaching , which is highly dependent on head and trunk control, as well as eye control and gaze. The development of grasping is an important component of child development stages , wherein the main types of grasps are: Infants reach as early as 16 weeks of age and are able to perform certain actions that lead to grasping objects. The act of grasping
240-476: A period of history and a European cultural movement covering the 15th and 16th centuries. It marked the transition from the Middle Ages to modernity and was characterized by an effort to revive and surpass the ideas and achievements of classical antiquity . Associated with great social change in most fields and disciplines, including art , architecture , politics, literature , exploration and science ,
360-464: A German bishop visiting north Italy during the 12th century, noticed a widespread new form of political and social organization, observing that Italy appeared to have exited from feudalism so that its society was based on merchants and commerce. Linked to this was anti-monarchical thinking, represented in the famous early Renaissance fresco cycle The Allegory of Good and Bad Government by Ambrogio Lorenzetti (painted 1338–1340), whose strong message
480-460: A citizen and official, as well as a theorist and philosopher and also Quintilian . Perhaps the most succinct expression of his perspective on humanism is in a 1465 poetic work La città di vita , but an earlier work, Della vita civile , is more wide-ranging. Composed as a series of dialogues set in a country house in the Mugello countryside outside Florence during the plague of 1430, Palmieri expounds on
600-404: A combination of reasoning and empirical evidence . Humanist education was based on the programme of Studia Humanitatis , the study of five humanities: poetry , grammar , history , moral philosophy , and rhetoric . Although historians have sometimes struggled to define humanism precisely, most have settled on "a middle of the road definition... the movement to recover, interpret, and assimilate
720-584: A continuous learning from antiquity). Sociologist Rodney Stark , plays down the Renaissance in favor of the earlier innovations of the Italian city-states in the High Middle Ages , which married responsive government, Christianity and the birth of capitalism . This analysis argues that, whereas the great European states (France and Spain) were absolute monarchies , and others were under direct Church control,
840-568: A cultural rebirth at the close of the Middle Ages and rise of the Modern world. One of the distinguishing features of Renaissance art was its development of highly realistic linear perspective. Giotto di Bondone (1267–1337) is credited with first treating a painting as a window into space, but it was not until the demonstrations of architect Filippo Brunelleschi (1377–1446) and the subsequent writings of Leon Battista Alberti (1404–1472) that perspective
960-538: A faster propagation of more widely distributed ideas. In the first period of the Italian Renaissance , humanists favored the study of humanities over natural philosophy or applied mathematics , and their reverence for classical sources further enshrined the Aristotelian and Ptolemaic views of the universe. Writing around 1450, Nicholas of Cusa anticipated the heliocentric worldview of Copernicus , but in
1080-601: A laboratory setting. Ethologists have been particularly concerned with the evolution of behavior and the understanding of behavior in terms of the theory of natural selection . In one sense, the first modern ethologist was Charles Darwin , whose book, The Expression of the Emotions in Man and Animals , influenced many future ethologists. A subfield of ethology is behavioral ecology which attempts to answer Nikolaas Tinbergen 's four questions with regard to animal behavior: what are
1200-406: A long and complex historiography , and in line with general skepticism of discrete periodizations, there has been much debate among historians reacting to the 19th-century glorification of the "Renaissance" and individual cultural heroes as "Renaissance men", questioning the usefulness of Renaissance as a term and as a historical delineation. Some observers have questioned whether the Renaissance
1320-489: A love of books. In some cases, cultivated library builders were also committed to offering others the opportunity to use their collections. Prominent aristocrats and princes of the Church created great libraries for the use of their courts, called "court libraries", and were housed in lavishly designed monumental buildings decorated with ornate woodwork, and the walls adorned with frescoes (Murray, Stuart A.P.). Renaissance art marks
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#17330847306851440-532: A more natural reality in painting; and gradual but widespread educational reform . It saw myriad artistic developments and contributions from such polymaths as Leonardo da Vinci and Michelangelo , who inspired the term "Renaissance man". In politics, the Renaissance contributed to the development of the customs and conventions of diplomacy, and in science to an increased reliance on observation and inductive reasoning . The period also saw revolutions in other intellectual and social scientific pursuits, as well as
1560-413: A new footing, by explaining the processes by which it can occur, and providing observational evidence that it had done so. Darwin's theory was rapidly accepted by the scientific community and soon became a central axiom of the rapidly developing science of biology. The basis for modern genetics began with the work of Gregor Mendel on peas in 1865, although the significance of his work was not realized at
1680-406: A new perspective on the fundamental basis of life. Having previously been the realm of gentlemen naturalists, over the 18th, 19th and 20th centuries, zoology became an increasingly professional scientific discipline . Explorer-naturalists such as Alexander von Humboldt investigated the interaction between organisms and their environment, and the ways this relationship depends on geography, laying
1800-432: A perfect mind and body, which could be attained with education. The purpose of humanism was to create a universal man whose person combined intellectual and physical excellence and who was capable of functioning honorably in virtually any situation. This ideology was referred to as the uomo universale , an ancient Greco-Roman ideal. Education during the Renaissance was mainly composed of ancient literature and history as it
1920-403: A philosophical fashion. Science and art were intermingled in the early Renaissance, with polymath artists such as Leonardo da Vinci making observational drawings of anatomy and nature. Leonardo set up controlled experiments in water flow, medical dissection, and systematic study of movement and aerodynamics, and he devised principles of research method that led Fritjof Capra to classify him as
2040-709: A process involving the union of a male and female haploid gamete , each gamete formed by meiosis . Ordinarily, gametes produced by separate individuals unite by a process of fertilization to form a diploid zygote that can then develop into a genetically unique individual progeny. However, some animals are also capable, as an alternative reproductive process, to reproduce parthenogenetically. Parthenogenesis has been described in snakes and lizards (see Misplaced Pages Parthenogenesis in squamates ), in amphibians (see Misplaced Pages Parthenogenesis in amphibians ) and in numerous other species (see Misplaced Pages Parthenogenesis ). Generally, meiosis in parthanogenetically reproducing animals occurs by
2160-513: A series of theses on philosophy, natural thought, faith, and magic defended against any opponent on the grounds of reason. In addition to studying classical Latin and Greek, Renaissance authors also began increasingly to use vernacular languages; combined with the introduction of the printing press , this allowed many more people access to books, especially the Bible. In all, the Renaissance can be viewed as an attempt by intellectuals to study and improve
2280-400: A similar process to that in sexually reproducing animals, but the diploid zygote nucleus is generated by the union of two haploid genomes from the same individual rather than from different individuals. Renaissance The Renaissance ( UK : / r ɪ ˈ n eɪ s ən s / rin- AY -sənss , US : / ˈ r ɛ n ə s ɑː n s / REN -ə-sahnss ) is
2400-520: A wall in the form of pilasters. One of the first buildings to use pilasters as an integrated system was in the Old Sacristy (1421–1440) by Brunelleschi. Arches, semi-circular or (in the Mannerist style) segmental, are often used in arcades, supported on piers or columns with capitals. There may be a section of entablature between the capital and the springing of the arch. Alberti was one of the first to use
2520-459: A wide range of writers. Classical texts could be found alongside humanist writings. These informal associations of intellectuals profoundly influenced Renaissance culture. An essential tool of Renaissance librarianship was the catalog that listed, described, and classified a library's books. Some of the richest "bibliophiles" built libraries as temples to books and knowledge. A number of libraries appeared as manifestations of immense wealth joined with
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#17330847306852640-540: Is 1401, when the rival geniuses Lorenzo Ghiberti and Filippo Brunelleschi competed for the contract to build the bronze doors for the Baptistery of the Florence Cathedral (Ghiberti won). Others see more general competition between artists and polymaths such as Brunelleschi, Ghiberti, Donatello , and Masaccio for artistic commissions as sparking the creativity of the Renaissance. Yet it remains much debated why
2760-453: Is a form of scientific taxonomy . Modern biological classification has its root in the work of Carl Linnaeus , who grouped species according to shared physical characteristics. These groupings have since been revised to improve consistency with the Darwinian principle of common descent . Molecular phylogenetics , which uses nucleic acid sequence as data, has driven many recent revisions and
2880-550: Is a two-stage motor skill that develops. The first stage, infants will reach out towards the desired object. In the second stage, the infants will then clench fingers once the object has made contact with the palm and close. Infants try to grasp an object before it is within reach by initiating arm and hand movements. The child will extend their grip more than necessary because their perception is less developed than an adult's grip. Infants progress their grasping skills throughout time by practice and providing objects that are reachable. It
3000-569: Is about the virtues of fairness, justice, republicanism and good administration. Holding both Church and Empire at bay, these city republics were devoted to notions of liberty. Skinner reports that there were many defences of liberty such as the Matteo Palmieri (1406–1475) celebration of Florentine genius not only in art, sculpture and architecture, but "the remarkable efflorescence of moral, social and political philosophy that occurred in Florence at
3120-657: Is administered by the International Code of Zoological Nomenclature . A merging draft, BioCode, was published in 1997 in an attempt to standardize nomenclature, but has yet to be formally adopted. Vertebrate zoology is the biological discipline that consists of the study of vertebrate animals, that is animals with a backbone , such as fish , amphibians , reptiles , birds and mammals . The various taxonomically oriented disciplines i.e. mammalogy , biological anthropology , herpetology , ornithology , and ichthyology seek to identify and classify species and study
3240-522: Is an extension of reaching and develops between six and nine months of age. Stable patterns of reaching in order to grasp continue to develop as the child grows and matures. By the age of 6, children are now learning hand placement on the writing utensil the correct way. Hand grasps can be grouped into taxonomies according to qualitative and quantitative properties, leading to specific clusters of movements. In terms of synergies, there are three categories of hand movements. Simple synergies are present, when all
3360-480: Is an integrative field of study, uniting concepts and information from evolutionary biology , taxonomy , ecology , physical geography , geology , paleontology and climatology . The origin of this field of study is widely accredited to Alfred Russel Wallace , a British biologist who had some of his work jointly published with Charles Darwin . Molecular biology studies the common genetic and developmental mechanisms of animals and plants, attempting to answer
3480-402: Is being studied. For example, what is learned about the physiology of yeast cells can also apply to human cells. The field of animal physiology extends the tools and methods of human physiology to non-human species. Physiology studies how, for example, the nervous , immune , endocrine , respiratory , and circulatory systems function and interact. Developmental biology is the study of
3600-406: Is done on both the microscopic and molecular levels for single-celled organisms such as bacteria as well as the specialized cells in multicellular organisms such as humans . Understanding the structure and function of cells is fundamental to all of the biological sciences. The similarities and differences between cell types are particularly relevant to molecular biology. Anatomy considers
3720-423: Is essential to provide infants with objects they can grasp in order to progress and further their development of the grasping skill; exposing infants to new objects to practice grasping will overall benefit this primitive motor skill and elevate the associated cognitive process. Infants develop their reaching and grasping from making just contact with their hands, to using their palms to contact an object. Infant grasp
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3840-443: Is likely to continue to do so. Biological classification belongs to the science of zoological systematics . Many scientists now consider the five-kingdom system outdated. Modern alternative classification systems generally start with the three-domain system : Archaea (originally Archaebacteria); Bacteria (originally Eubacteria); Eukaryota (including protists , fungi , plants , and animals ) These domains reflect whether
3960-545: Is one of the primary branches of biology . The term is derived from Ancient Greek ζῷον , zōion ('animal'), and λόγος , logos ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and used this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle . He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and
4080-415: Is partly based on paleontology , which uses the fossil record to answer questions about the mode and tempo of evolution, and partly on the developments in areas such as population genetics and evolutionary theory. Following the development of DNA fingerprinting techniques in the late 20th century, the application of these techniques in zoology has increased the understanding of animal populations. In
4200-406: Is quantitative, and recently a significant amount of work has been done using computer science techniques such as bioinformatics and computational biology . Molecular genetics , the study of gene structure and function, has been among the most prominent sub-fields of molecular biology since the early 2000s. Other branches of biology are informed by molecular biology, by either directly studying
4320-698: Is reflected in zoology by the presence of animals in Egyptian hieroglyphics. Although the concept of zoology as a single coherent field arose much later, the zoological sciences emerged from natural history reaching back to the biological works of Aristotle and Galen in the ancient Greco-Roman world . In the fourth century BC, Aristotle looked at animals as living organisms, studying their structure, development and vital phenomena. He divided them into two groups: animals with blood, equivalent to our concept of vertebrates , and animals without blood, invertebrates . He spent two years on Lesbos , observing and describing
4440-535: Is that the devastation in Florence caused by the Black Death , which hit Europe between 1348 and 1350, resulted in a shift in the world view of people in 14th century Italy. Italy was particularly badly hit by the plague, and it has been speculated that the resulting familiarity with death caused thinkers to dwell more on their lives on Earth, rather than on spirituality and the afterlife . It has also been argued that
4560-559: Is the genus, and sapiens the specific epithet, both of them combined make up the species name. When writing the scientific name of an organism, it is proper to capitalize the first letter in the genus and put all of the specific epithet in lowercase. Additionally, the entire term may be italicized or underlined. The dominant classification system is called the Linnaean taxonomy . It includes ranks and binomial nomenclature . The classification, taxonomy , and nomenclature of zoological organisms
4680-614: Is the subfield of biology that studies the evolutionary processes (natural selection, common descent, speciation) that produced the diversity of life on Earth. Evolutionary research is concerned with the origin and descent of species , as well as their change over time, and includes scientists from many taxonomically oriented disciplines. For example, it generally involves scientists who have special training in particular organisms such as mammalogy , ornithology , herpetology , or entomology , but use those organisms as systems to answer general questions about evolution. Evolutionary biology
4800-717: The Carolingian Renaissance (8th and 9th centuries), Ottonian Renaissance (10th and 11th century), and the Renaissance of the 12th century . The Renaissance was a cultural movement that profoundly affected European intellectual life in the early modern period . Beginning in Italy, and spreading to the rest of Europe by the 16th century, its influence was felt in art , architecture , philosophy , literature , music , science , technology , politics, religion, and other aspects of intellectual inquiry. Renaissance scholars employed
4920-808: The High Middle Ages in Western Europe and in the Islamic Golden Age (normally in translation), but Greek literary, oratorical and historical works (such as Homer , the Greek dramatists, Demosthenes and Thucydides ) were not studied in either the Latin or medieval Islamic worlds ; in the Middle Ages these sorts of texts were only studied by Byzantine scholars. Some argue that the Timurid Renaissance in Samarkand and Herat , whose magnificence toned with Florence as
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5040-713: The Late Middle Ages have led some to theorize that its unusual social climate allowed the emergence of a rare cultural efflorescence. Italy did not exist as a political entity in the early modern period. Instead, it was divided into smaller city-states and territories: the Neapolitans controlled the south, the Florentines and the Romans at the center, the Milanese and the Genoese to
5160-745: The Levant . Their translations and commentaries on these ideas worked their way through the Arab West into Iberia and Sicily , which became important centers for this transmission of ideas. Between the 11th and 13th centuries, many schools dedicated to the translation of philosophical and scientific works from Classical Arabic to Medieval Latin were established in Iberia, most notably the Toledo School of Translators . This work of translation from Islamic culture, though largely unplanned and disorganized, constituted one of
5280-688: The Medici , and the migration of Greek scholars and their texts to Italy following the fall of Constantinople to the Ottoman Empire . Other major centers were Venice , Genoa , Milan , Rome during the Renaissance Papacy , and Naples . From Italy, the Renaissance spread throughout Europe and also to American, African and Asian territories ruled by the European colonial powers of the time or where Christian missionaries were active. The Renaissance has
5400-543: The Northern Renaissance , the Spanish Renaissance , etc. In addition to the standard periodization, proponents of a "long Renaissance" may put its beginning in the 14th century and its end in the 17th century. The traditional view focuses more on the Renaissance's early modern aspects and argues that it was a break from the past, but many historians today focus more on its medieval aspects and argue that it
5520-492: The Pisa Baptistry , demonstrates that classical models influenced Italian art before the Renaissance took root as a literary movement. Applied innovation extended to commerce. At the end of the 15th century, Luca Pacioli published the first work on bookkeeping , making him the founder of accounting . The rediscovery of ancient texts and the invention of the printing press in about 1440 democratized learning and allowed
5640-545: The anatomy of different groups. It is closely related to evolutionary biology and phylogeny (the evolution of species). Physiology studies the mechanical, physical, and biochemical processes of living organisms by attempting to understand how all of the structures function as a whole. The theme of "structure to function" is central to biology. Physiological studies have traditionally been divided into plant physiology and animal physiology , but some principles of physiology are universal, no matter what particular organism
5760-550: The proximate causes of the behavior, the developmental history of the organism, the survival value and phylogeny of the behavior? Another area of study is animal cognition , which uses laboratory experiments and carefully controlled field studies to investigate an animal's intelligence and learning. Biogeography studies the spatial distribution of organisms on the Earth , focusing on topics like dispersal and migration , plate tectonics , climate change , and cladistics . It
5880-399: The taxonomist . Originally it was thought that species were immutable, but with the arrival of Darwin's theory of evolution, the field of cladistics came into being, studying the relationships between the different groups or clades . Systematics is the study of the diversification of living forms, the evolutionary history of a group is known as its phylogeny , and the relationship between
6000-587: The "father of modern science". Other examples of Da Vinci's contribution during this period include machines designed to saw marbles and lift monoliths, and new discoveries in acoustics, botany, geology, anatomy, and mechanics. A suitable environment had developed to question classical scientific doctrine. The discovery in 1492 of the New World by Christopher Columbus challenged the classical worldview. The works of Ptolemy (in geography) and Galen (in medicine) were found to not always match everyday observations. As
6120-404: The 14th century with a Latin phase, when Renaissance scholars such as Petrarch , Coluccio Salutati (1331–1406), Niccolò de' Niccoli (1364–1437), and Poggio Bracciolini (1380–1459) scoured the libraries of Europe in search of works by such Latin authors as Cicero , Lucretius , Livy , and Seneca . By the early 15th century, the bulk of the surviving such Latin literature had been recovered;
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#17330847306856240-489: The 16th century. During the Renaissance and early modern period, zoological thought was revolutionized in Europe by a renewed interest in empiricism and the discovery of many novel organisms. Prominent in this movement were Andreas Vesalius and William Harvey , who used experimentation and careful observation in physiology , and naturalists such as Carl Linnaeus , Jean-Baptiste Lamarck , and Buffon who began to classify
6360-470: The 1980s, developmental biology re-entered evolutionary biology from its initial exclusion from the modern synthesis through the study of evolutionary developmental biology . Related fields often considered part of evolutionary biology are phylogenetics , systematics , and taxonomy . Ethology is the scientific and objective study of animal behavior under natural conditions, as opposed to behaviorism , which focuses on behavioral response studies in
6480-522: The 1st-century writer Vitruvius and the flourishing discipline of mathematics, Brunelleschi formulated the Renaissance style that emulated and improved on classical forms. His major feat of engineering was building the dome of Florence Cathedral . Another building demonstrating this style is the Basilica of Sant'Andrea, Mantua , built by Alberti. The outstanding architectural work of the High Renaissance
6600-462: The Black Death prompted a new wave of piety, manifested in the sponsorship of religious works of art. However, this does not fully explain why the Renaissance occurred specifically in Italy in the 14th century. The Black Death was a pandemic that affected all of Europe in the ways described, not only Italy. The Renaissance's emergence in Italy was most likely the result of the complex interaction of
6720-710: The Convent of San Donato in Scopeto in Florence. The Renaissance was certainly underway before Lorenzo de' Medici came to power – indeed, before the Medici family itself achieved hegemony in Florentine society. In some ways, Renaissance humanism was not a philosophy but a method of learning. In contrast to the medieval scholastic mode, which focused on resolving contradictions between authors, Renaissance humanists would study ancient texts in their original languages and appraise them through
6840-440: The Greek phase of Renaissance humanism was under way, as Western European scholars turned to recovering ancient Greek literary, historical, oratorical and theological texts. Unlike with Latin texts, which had been preserved and studied in Western Europe since late antiquity, the study of ancient Greek texts was very limited in medieval Western Europe. Ancient Greek works on science, mathematics, and philosophy had been studied since
6960-741: The Islamic steps of Ibn Khaldun . Pico della Mirandola wrote the "manifesto" of the Renaissance, the Oration on the Dignity of Man , a vibrant defence of thinking. Matteo Palmieri (1406–1475), another humanist, is most known for his work Della vita civile ("On Civic Life"; printed 1528), which advocated civic humanism , and for his influence in refining the Tuscan vernacular to the same level as Latin. Palmieri drew on Roman philosophers and theorists, especially Cicero , who, like Palmieri, lived an active public life as
7080-468: The Reformation and Counter-Reformation clashed, the Northern Renaissance showed a decisive shift in focus from Aristotelean natural philosophy to chemistry and the biological sciences (botany, anatomy, and medicine). The willingness to question previously held truths and search for new answers resulted in a period of major scientific advancements. Some view this as a " scientific revolution ", heralding
7200-618: The Renaissance began in Italy, and why it began when it did. Accordingly, several theories have been put forward to explain its origins. Peter Rietbergen posits that various influential Proto-Renaissance movements started from roughly 1300 onwards across many regions of Europe . In stark contrast to the High Middle Ages , when Latin scholars focused almost entirely on studying Greek and Arabic works of natural science, philosophy and mathematics, Renaissance scholars were most interested in recovering and studying Latin and Greek literary, historical, and oratorical texts. Broadly speaking, this began in
7320-421: The Renaissance has close similarities to both, especially the late and early sub-periods of either. The Renaissance began in Florence , one of the many states of Italy . Various theories have been proposed to account for its origins and characteristics, focusing on a variety of factors, including Florence's social and civic peculiarities at the time: its political structure, the patronage of its dominant family,
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#17330847306857440-559: The Renaissance was first centered in the Republic of Florence , then spread to the rest of Italy and later throughout Europe. The term rinascita ("rebirth") first appeared in Lives of the Artists ( c. 1550 ) by Giorgio Vasari , while the corresponding French word renaissance was adopted into English as the term for this period during the 1830s. The Renaissance's intellectual basis
7560-465: The West. It was in their new focus on literary and historical texts that Renaissance scholars differed so markedly from the medieval scholars of the Renaissance of the 12th century , who had focused on studying Greek and Arabic works of natural sciences, philosophy, and mathematics, rather than on such cultural texts. In the revival of neoplatonism , Renaissance humanists did not reject Christianity ; on
7680-458: The above factors. The plague was carried by fleas on sailing vessels returning from the ports of Asia, spreading quickly due to lack of proper sanitation: the population of England , then about 4.2 million, lost 1.4 million people to the bubonic plague . Florence's population was nearly halved in the year 1347. As a result of the decimation in the populace the value of the working class increased, and commoners came to enjoy more freedom. To answer
7800-449: The animals and plants, considering the adaptations of different organisms and the function of their parts. Four hundred years later, Roman physician Galen dissected animals to study their anatomy and the function of the different parts, because the dissection of human cadavers was prohibited at the time. This resulted in some of his conclusions being false, but for many centuries it was considered heretical to challenge any of his views, so
7920-476: The arch on a monumental. Renaissance vaults do not have ribs; they are semi-circular or segmental and on a square plan, unlike the Gothic vault, which is frequently rectangular. Renaissance artists were not pagans, although they admired antiquity and kept some ideas and symbols of the medieval past. Nicola Pisano (c. 1220 – c. 1278) imitated classical forms by portraying scenes from the Bible. His Annunciation , from
8040-692: The beginning of the modern age, others as an acceleration of a continuous process stretching from the ancient world to the present day. Significant scientific advances were made during this time by Galileo Galilei , Tycho Brahe , and Johannes Kepler . Copernicus, in De revolutionibus orbium coelestium ( On the Revolutions of the Heavenly Spheres ), posited that the Earth moved around the Sun. De humani corporis fabrica ( On
8160-427: The cells have nuclei or not, as well as differences in the chemical composition of the cell exteriors. Further, each kingdom is broken down recursively until each species is separately classified. The order is: Domain ; kingdom ; phylum ; class ; order ; family ; genus ; species . The scientific name of an organism is generated from its genus and species. For example, humans are listed as Homo sapiens . Homo
8280-469: The center of a cultural rebirth, were linked to the Ottoman Empire , whose conquests led to the migration of Greek scholars to Italian cities. One of the greatest achievements of Renaissance scholars was to bring this entire class of Greek cultural works back into Western Europe for the first time since late antiquity. Muslim logicians, most notably Avicenna and Averroes , had inherited Greek ideas after they had invaded and conquered Egypt and
8400-557: The child's weight, they may also release their grip suddenly and without warning. The reverse motion can be induced by stroking the back or side of the hand. Zoology Zoology ( UK : / z u ˈ ɒ l ə dʒ i / zoo- OL -ə-jee , US : / z oʊ ˈ ɒ l ə dʒ i / zoh- OL -ə-jee ) is the scientific study of animals . Its studies include the structure , embryology , classification , habits , and distribution of all animals, both living and extinct , and how they interact with their ecosystems . Zoology
8520-434: The clades can be shown diagrammatically in a cladogram . Although someone who made a scientific study of animals would historically have described themselves as a zoologist, the term has come to refer to those who deal with individual animals, with others describing themselves more specifically as physiologists, ethologists, evolutionary biologists, ecologists, pharmacologists, endocrinologists or parasitologists. Although
8640-450: The components of the hand are moving in a similar pattern. Conversely, it is called reciprocal synergies, when the fingers or thumbs are working in different patterns. Finally, sequential patterns are specific hand movements performed in a specific order. Synergies are fundamental for controlling complex hand movements, such as the ones of the hand during grasping. The importance of synergies has been demonstrated for both muscle control and in
8760-495: The contrary, many of the Renaissance's greatest works were devoted to it, and the Church patronized many works of Renaissance art. But a subtle shift took place in the way that intellectuals approached religion that was reflected in many other areas of cultural life. In addition, many Greek Christian works, including the Greek New Testament, were brought back from Byzantium to Western Europe and engaged Western scholars for
8880-514: The determination of the double helical structure of the DNA molecule by Francis Crick and James Watson in 1953, the realm of molecular biology opened up, leading to advances in cell biology , developmental biology and molecular genetics . The study of systematics was transformed as DNA sequencing elucidated the degrees of affinity between different organisms. Zoology is the branch of science dealing with animals . A species can be defined as
9000-643: The discovery of the structure of DNA by Francis Crick and James Watson in 1953, the realm of molecular biology opened up, leading to advances in cell biology , developmental biology and molecular genetics . The history of zoology traces the study of the animal kingdom from ancient to modern times. Prehistoric people needed to study the animals and plants in their environment to exploit them and survive. Cave paintings, engravings and sculptures in France dating back 15,000 years show bison, horses, and deer in carefully rendered detail. Similar images from other parts of
9120-456: The diversity of life and the fossil record , as well as studying the development and behavior of organisms. Antonie van Leeuwenhoek did pioneering work in microscopy and revealed the previously unknown world of microorganisms , laying the groundwork for cell theory . van Leeuwenhoek's observations were endorsed by Robert Hooke ; all living organisms were composed of one or more cells and could not generate spontaneously. Cell theory provided
9240-530: The first time since late antiquity. This new engagement with Greek Christian works, and particularly the return to the original Greek of the New Testament promoted by humanists Lorenzo Valla and Erasmus , helped pave the way for the Reformation . Well after the first artistic return to classicism had been exemplified in the sculpture of Nicola Pisano , Florentine painters led by Masaccio strove to portray
9360-404: The forms of macroscopic structures such as organs and organ systems. It focuses on how organs and organ systems work together in the bodies of humans and other animals, in addition to how they work independently. Anatomy and cell biology are two studies that are closely related, and can be categorized under "structural" studies. Comparative anatomy is the study of similarities and differences in
9480-431: The foundations for biogeography , ecology and ethology . Naturalists began to reject essentialism and consider the importance of extinction and the mutability of species . These developments, as well as the results from embryology and paleontology , were synthesized in the 1859 publication of Charles Darwin 's theory of evolution by natural selection ; in this Darwin placed the theory of organic evolution on
9600-502: The function of their parts. Modern zoology has its origins during the Renaissance and early modern period, with Carl Linnaeus , Antonie van Leeuwenhoek , Robert Hooke , Charles Darwin , Gregor Mendel and many others. The study of animals has largely moved on to deal with form and function, adaptations, relationships between groups, behaviour and ecology. Zoology has increasingly been subdivided into disciplines such as classification , physiology , biochemistry and evolution . With
9720-645: The greatest transmissions of ideas in history. The movement to reintegrate the regular study of Greek literary, historical, oratorical, and theological texts back into the Western European curriculum is usually dated to the 1396 invitation from Coluccio Salutati to the Byzantine diplomat and scholar Manuel Chrysoloras (c. 1355–1415) to teach Greek in Florence. This legacy was continued by a number of expatriate Greek scholars, from Basilios Bessarion to Leo Allatius . The unique political structures of Italy during
9840-438: The height of the epidemic due to the chaotic conditions in the city, but a small group of officials was appointed to conduct the affairs of the city, which ensured continuity of government. It has long been a matter of debate why the Renaissance began in Florence , and not elsewhere in Italy. Scholars have noted several features unique to Florentine cultural life that may have caused such a cultural movement. Many have emphasized
9960-414: The human form realistically, developing techniques to render perspective and light more naturally. Political philosophers , most famously Niccolò Machiavelli , sought to describe political life as it really was, that is to understand it rationally. A critical contribution to Italian Renaissance humanism, Giovanni Pico della Mirandola wrote De hominis dignitate ( Oration on the Dignity of Man , 1486),
10080-477: The humanist method in study, and searched for realism and human emotion in art. Renaissance humanists such as Poggio Bracciolini sought out in Europe's monastic libraries the Latin literary, historical, and oratorical texts of antiquity , while the fall of Constantinople (1453) generated a wave of émigré Greek scholars bringing precious manuscripts in ancient Greek , many of which had fallen into obscurity in
10200-493: The immune system, leaving young children without a fighting chance. Children in city dwellings were more affected by the spread of disease than the children of the wealthy. The Black Death caused greater upheaval to Florence's social and political structure than later epidemics. Despite a significant number of deaths among members of the ruling classes, the government of Florence continued to function during this period. Formal meetings of elected representatives were suspended during
10320-413: The increased need for labor, workers traveled in search of the most favorable position economically. The demographic decline due to the plague had economic consequences: the prices of food dropped and land values declined by 30–40% in most parts of Europe between 1350 and 1400. Landholders faced a great loss, but for ordinary men and women it was a windfall. The survivors of the plague found not only that
10440-427: The independent city-republics of Italy took over the principles of capitalism invented on monastic estates and set off a vast unprecedented Commercial Revolution that preceded and financed the Renaissance. Historian Leon Poliakov offers a critical view in his seminal study of European racist thought: The Aryan Myth . According to Poliakov, the use of ethnic origin myths are first used by Renaissance humanists "in
10560-476: The interactions of molecules in their own right such as in cell biology and developmental biology , or indirectly, where molecular techniques are used to infer historical attributes of populations or species , as in fields in evolutionary biology such as population genetics and phylogenetics . There is also a long tradition of studying biomolecules "from the ground up", or molecularly, in biophysics . Animals generally reproduce by sexual reproduction ,
10680-577: The introduction of modern banking and the field of accounting. The Renaissance period started during the crisis of the Late Middle Ages and conventionally ends by the 1600s with the waning of humanism , and the advents of the Reformation and Counter-Reformation , and in art the Baroque period. It had a different period and characteristics in different regions, such as the Italian Renaissance,
10800-455: The kinematic domain in several studies, lately on studies including large cohorts of subjects. The palmar grasp reflex (sometimes simply called grasp reflex ) is among the primitive reflexes and appears at birth and persists until five or six months of age. When an object is placed in the infant's hand and strokes their palm, the fingers will close and they will grasp it. The grip is strong but unpredictable; though it may be able to support
10920-464: The language, literature, learning and values of ancient Greece and Rome". Above all, humanists asserted "the genius of man ... the unique and extraordinary ability of the human mind". Humanist scholars shaped the intellectual landscape throughout the early modern period. Political philosophers such as Niccolò Machiavelli and Thomas More revived the ideas of Greek and Roman thinkers and applied them in critiques of contemporary government, following
11040-404: The largest group of organisms in which any two individuals of the appropriate sex can produce fertile offspring; about 1.5 million species of animal have been described and it has been estimated that as many as 8 million animal species may exist. An early necessity was to identify the organisms and group them according to their characteristics, differences and relationships, and this is the field of
11160-437: The late 13th century, in particular with the writings of Dante and the paintings of Giotto . As a cultural movement, the Renaissance encompassed innovative flowering of literary Latin and an explosion of vernacular literatures , beginning with the 14th-century resurgence of learning based on classical sources, which contemporaries credited to Petrarch ; the development of linear perspective and other techniques of rendering
11280-592: The north and west respectively, and the Venetians to the north east. 15th-century Italy was one of the most urbanized areas in Europe. Many of its cities stood among the ruins of ancient Roman buildings; it seems likely that the classical nature of the Renaissance was linked to its origin in the Roman Empire's heartland. Historian and political philosopher Quentin Skinner points out that Otto of Freising (c. 1114–1158),
11400-419: The prevailing cultural conditions at the time. Lorenzo de' Medici (1449–1492) was the catalyst for an enormous amount of arts patronage, encouraging his countrymen to commission works from the leading artists of Florence, including Leonardo da Vinci , Sandro Botticelli , and Michelangelo Buonarroti . Works by Neri di Bicci , Botticelli, Leonardo, and Filippino Lippi had been commissioned additionally by
11520-459: The prices of food were cheaper but also that lands were more abundant, and many of them inherited property from their dead relatives. The spread of disease was significantly more rampant in areas of poverty. Epidemics ravaged cities, particularly children. Plagues were easily spread by lice, unsanitary drinking water, armies, or by poor sanitation. Children were hit the hardest because many diseases, such as typhus and congenital syphilis , target
11640-517: The processes by which animals and plants reproduce and grow. The discipline includes the study of embryonic development , cellular differentiation , regeneration , asexual and sexual reproduction , metamorphosis , and the growth and differentiation of stem cells in the adult organism. Development of both animals and plants is further considered in the articles on evolution , population genetics , heredity , genetic variability , Mendelian inheritance , and reproduction . Evolutionary biology
11760-412: The qualities of the ideal citizen. The dialogues include ideas about how children develop mentally and physically, how citizens can conduct themselves morally, how citizens and states can ensure probity in public life, and an important debate on the difference between that which is pragmatically useful and that which is honest. The humanists believed that it is important to transcend to the afterlife with
11880-493: The questions regarding the mechanisms of genetic inheritance and the structure of the gene . In 1953, James Watson and Francis Crick described the structure of DNA and the interactions within the molecule, and this publication jump-started research into molecular biology and increased interest in the subject. While researchers practice techniques specific to molecular biology, it is common to combine these with methods from genetics and biochemistry . Much of molecular biology
12000-494: The results of his own investigations. His general approach was surprisingly modern, and he wrote, "For it is [the task] of natural science not simply to accept what we are told but to inquire into the causes of natural things." An early pioneer was Conrad Gessner , whose monumental 4,500-page encyclopedia of animals, Historia animalium , was published in four volumes between 1551 and 1558. In Europe, Galen's work on anatomy remained largely unsurpassed and unchallenged up until
12120-503: The rise of the germ theory of disease , though the mechanism of inheritance remained a mystery. In the early 20th century, the rediscovery of Mendel's work led to the rapid development of genetics , and by the 1930s the combination of population genetics and natural selection in the modern synthesis created evolutionary biology . Research in cell biology is interconnected to other fields such as genetics, biochemistry , medical microbiology , immunology , and cytochemistry . With
12240-544: The role played by the Medici , a banking family and later ducal ruling house , in patronizing and stimulating the arts. Some historians have postulated that Florence was the birthplace of the Renaissance as a result of luck, i.e., because " Great Men " were born there by chance: Leonardo, Botticelli and Michelangelo were all born in Tuscany . Arguing that such chance seems improbable, other historians have contended that these "Great Men" were only able to rise to prominence because of
12360-522: The same time". Even cities and states beyond central Italy, such as the Republic of Florence at this time, were also notable for their merchant republics , especially the Republic of Venice. Although in practice these were oligarchical , and bore little resemblance to a modern democracy , they did have democratic features and were responsive states, with forms of participation in governance and belief in liberty. The relative political freedom they afforded
12480-454: The secular and worldly, both through the revival of ideas from antiquity and through novel approaches to thought. Political philosopher Hans Kohn describes it as an age where "Men looked for new foundations"; some like Erasmus and Thomas More envisioned new reformed spiritual foundations, others. in the words of Machiavelli , una lunga sperienza delle cose moderne ed una continua lezione delle antiche (a long experience with modern life and
12600-407: The service of a new born chauvinism". Many argue that the ideas characterizing the Renaissance had their origin in Florence at the turn of the 13th and 14th centuries, in particular with the writings of Dante Alighieri (1265–1321) and Petrarch (1304–1374), as well as the paintings of Giotto di Bondone (1267–1337). Some writers date the Renaissance quite precisely; one proposed starting point
12720-499: The structures and mechanisms specific to those groups. The rest of the animal kingdom is dealt with by invertebrate zoology , a vast and very diverse group of animals that includes sponges , echinoderms , tunicates , worms , molluscs , arthropods and many other phyla , but single-celled organisms or protists are not usually included. Cell biology studies the structural and physiological properties of cells , including their behavior , interactions, and environment . This
12840-529: The study of anatomy stultified. During the post-classical era , Middle Eastern science and medicine was the most advanced in the world, integrating concepts from Ancient Greece, Rome, Mesopotamia and Persia as well as the ancient Indian tradition of Ayurveda , while making numerous advances and innovations. In the 13th century, Albertus Magnus produced commentaries and paraphrases of all Aristotle's works; his books on topics like botany , zoology, and minerals included information from ancient sources, but also
12960-565: The study of animal life is ancient, its scientific incarnation is relatively modern. This mirrors the transition from natural history to biology at the start of the 19th century. Since Hunter and Cuvier , comparative anatomical study has been associated with morphography , shaping the modern areas of zoological investigation: anatomy , physiology , histology , embryology , teratology and ethology . Modern zoology first arose in German and British universities. In Britain, Thomas Henry Huxley
13080-433: The time. Darwin gave a new direction to morphology and physiology , by uniting them in a common biological theory: the theory of organic evolution. The result was a reconstruction of the classification of animals upon a genealogical basis, fresh investigation of the development of animals, and early attempts to determine their genetic relationships. The end of the 19th century saw the fall of spontaneous generation and
13200-515: The works of Leonardo, Michelangelo and Raphael representing artistic pinnacles that were much imitated by other artists. Other notable artists include Sandro Botticelli , working for the Medici in Florence, Donatello , another Florentine, and Titian in Venice, among others. In the Low Countries , a particularly vibrant artistic culture developed. The work of Hugo van der Goes and Jan van Eyck
13320-489: The world illustrated mostly the animals hunted for food and the savage animals. The Neolithic Revolution , which is characterized by the domestication of animals , continued throughout Antiquity. Ancient knowledge of wildlife is illustrated by the realistic depictions of wild and domestic animals in the Near East, Mesopotamia, and Egypt, including husbandry practices and techniques, hunting and fishing. The invention of writing
13440-423: Was a cultural "advance" from the Middle Ages, instead seeing it as a period of pessimism and nostalgia for classical antiquity , while social and economic historians, especially of the longue durée , have instead focused on the continuity between the two eras, which are linked, as Panofsky observed, "by a thousand ties". The word has also been extended to other historical and cultural movements, such as
13560-502: Was a prominent figure. His ideas were centered on the morphology of animals. Many consider him the greatest comparative anatomist of the latter half of the 19th century. Similar to Hunter , his courses were composed of lectures and laboratory practical classes in contrast to the previous format of lectures only. Scientific classification in zoology , is a method by which zoologists group and categorize organisms by biological type , such as genus or species . Biological classification
13680-477: Was an extension of the Middle Ages. The beginnings of the period—the early Renaissance of the 15th century and the Italian Proto-Renaissance from around 1250 or 1300—overlap considerably with the Late Middle Ages , conventionally dated to c. 1350–1500 , and the Middle Ages themselves were a long period filled with gradual changes, like the modern age; as a transitional period between both,
13800-634: Was conducive to academic and artistic advancement. Likewise, the position of Italian cities such as Venice as great trading centres made them intellectual crossroads. Merchants brought with them ideas from far corners of the globe, particularly the Levant . Venice was Europe's gateway to trade with the East, and a producer of fine glass , while Florence was a capital of textiles. The wealth such business brought to Italy meant large public and private artistic projects could be commissioned and individuals had more leisure time for study. One theory that has been advanced
13920-405: Was formalized as an artistic technique. The development of perspective was part of a wider trend toward realism in the arts. Painters developed other techniques, studying light, shadow, and, famously in the case of Leonardo da Vinci , human anatomy . Underlying these changes in artistic method was a renewed desire to depict the beauty of nature and to unravel the axioms of aesthetics , with
14040-441: Was founded in its version of humanism , derived from the concept of Roman humanitas and the rediscovery of classical Greek philosophy , such as that of Protagoras , who said that "man is the measure of all things". Although the invention of metal movable type sped the dissemination of ideas from the later 15th century, the changes of the Renaissance were not uniform across Europe: the first traces appear in Italy as early as
14160-490: Was particularly influential on the development of painting in Italy, both technically with the introduction of oil paint and canvas, and stylistically in terms of naturalism in representation. Later, the work of Pieter Brueghel the Elder would inspire artists to depict themes of everyday life. In architecture, Filippo Brunelleschi was foremost in studying the remains of ancient classical buildings. With rediscovered knowledge from
14280-418: Was the rebuilding of St. Peter's Basilica , combining the skills of Bramante , Michelangelo, Raphael, Sangallo and Maderno . During the Renaissance, architects aimed to use columns, pilasters , and entablatures as an integrated system. The Roman orders types of columns are used: Tuscan and Composite . These can either be structural, supporting an arcade or architrave, or purely decorative, set against
14400-427: Was thought that the classics provided moral instruction and an intensive understanding of human behavior. A unique characteristic of some Renaissance libraries is that they were open to the public. These libraries were places where ideas were exchanged and where scholarship and reading were considered both pleasurable and beneficial to the mind and soul. As freethinking was a hallmark of the age, many libraries contained
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