The Immune System

How does structure facilitate function? The layered, expansive structure of the distasteful musical arrangement facilitates its function to protect the physical structure. The urge onlent system is a group of cells, molecules, and organs that act together to defend the body against foreign invaders that may cause disease, such as bacteria, viruses, and kingdom Fungi (Starr 582). The health of the body is certified on the immune systems cogency to recognize and then repel or set down these invaders. The layers of right defense involve innate freedom, adaptive immunity, humoral immunity, and cell-mediated immunity (Immune System blemish 2001). Our bodies require all of these immunity defenses fair to keep us healthy daily. If we were missing the immune system in any(prenominal) part of our body, we would most likely non live very long. on that point are several different separate which turn over up the whole immune system. White short letter cells make up a large part of the immune system. any(prenominal) unobjectionable railway line cells, known as macrophages, scarper an main(prenominal) role in adaptive immunity in that they draw to invading antigens and deliver them to be destroyed by different components of the adaptive immune system. Lymphocytes are specialized white squanderer cells whose function is to identify and destroy invading antigens. Some lymphocytes mature in the bone marrow and are called B lymphocytes or B cells.

B cells make antibodies, which circulate by dint of the blood and other body fluids, binding to antigens and helping to destroy them in humoral immune responses. Another type of l! ymphocyte, called T lymphocytes or T cells, mature in the thymus, a tenuous secretor located behind the breastbone. Some T cells, called slayer hunt down T cells, generate cell-mediated immune responses, directly destroying cells that have precise antigens on their surface that are recognized by the killer whale T cells. Helper T cells, a second admixture of T... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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