An organ system is a biological system consisting of a group of organs that work together to perform one or more functions. Each organ has a specialized role in an organism body, and is made up of distinct tissues .
3-447: Systemic fundamental to a predominant social, economic, or political practice. This refers to: In medicine, systemic means affecting the whole body, or at least multiple organ systems . It is in contrast with topical or local . Organ system Main article: List of systems of the human body There are 11 distinct organ systems in human beings, which form the basis of human anatomy and physiology . The 11 organ systems:
6-412: The nose is in the respiratory system and also serves as a sensory organ in the nervous system; the testes and ovaries are both part of the reproductive and endocrine systems. Other animals have similar organ systems to humans although simpler animals may have fewer organs in an organ system or even fewer organ systems. Plants have two major organs systems. Vascular plants have two distinct organ systems:
9-477: The respiratory system, digestive and excretory system, circulatory system, urinary system, integumentary system, skeletal system, muscular system, endocrine system, lymphatic system, nervous system, and reproductive system. There are other systems in the body that are not organ systems—for example, the immune system protects the organism from infection, but it is not an organ system since it is not composed of organs. Some organs are in more than one system—for example,
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