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  2. List of systems of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_systems_of_the...

    This is an accepted version of this page This is the latest accepted revision, reviewed on 4 March 2025. List of organ systems in the human body Part of a series of lists about Human anatomy General Features Regions Variations Movements Systems Structures Arteries Bones Eponymous Foramina Glands endocrine exocrine Lymphatic vessels Nerves Organs Systems Veins Muscles Abductors Adductors ...

  3. Blood vessel - Wikipedia

    en.wikipedia.org/wiki/Blood_vessel

    Blood vessels transport blood cells, nutrients, and oxygen to most of the tissues of a body. They also take waste and carbon dioxide away from the tissues. [ 2 ] Some tissues such as cartilage , epithelium , and the lens and cornea of the eye are not supplied with blood vessels and are termed avascular .

  4. Circulatory system - Wikipedia

    en.wikipedia.org/wiki/Circulatory_system

    In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body. [1] [2] It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and Latin vascula meaning vessels).

  5. Immune system - Wikipedia

    en.wikipedia.org/wiki/Immune_system

    Basophils and eosinophils are related to neutrophils. They secrete chemical mediators that are involved in defending against parasites and play a role in allergic reactions, such as asthma. [39] Innate lymphoid cells (ILCs) are a group of innate immune cells that are derived from common lymphoid progenitor and belong to the lymphoid lineage.

  6. Blood - Wikipedia

    en.wikipedia.org/wiki/Blood

    Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells. [1] Blood is composed of blood cells suspended in blood plasma.

  7. Organ system - Wikipedia

    en.wikipedia.org/wiki/Organ_system

    circulate blood in order to transport nutrients, waste, hormones, O 2, CO 2, and aid in maintaining pH and temperature blood , heart , arteries , veins and capillaries Urinary system

  8. Ocular immune system - Wikipedia

    en.wikipedia.org/wiki/Ocular_immune_system

    The latter, defensins, have a wide range of antimicrobial affects against bacteria, fungi, and viruses, as well as effects in accelerating healing of damaged epithelial cells. [ 12 ] [ 13 ] It has also been found that the presence of secreted defensins secreted by corneal keratocytes is correlated with cases of corneal transplant rejection ...

  9. Organ (biology) - Wikipedia

    en.wikipedia.org/wiki/Organ_(biology)

    Lymphatic system: structures involved in the transfer of lymph between tissues and the blood stream, the lymph and the nodes and vessels that transport it including the immune system: defending against disease-causing agents with leukocytes, tonsils, adenoids, thymus and spleen. Integumentary system: skin, hair and nails of mammals.