Chapter 32 Defense Against Disease

Chapter 32 Defense Against Disease - Chapter 32 Defense...

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Chapter 32 Defense Against Disease Vocabulary acquired immune deficiency syndrome allergy – immune response to non dangerous antigens antibody – Y shaped molecules produced by B cells composed to two pairs of peptide chains. Bind to specific antigen molecules. Once bound, the B cell divides into plasma and memory cells. antigen – foreign molecules that cause antibody response, located on the outside of invading microbes autoimmune disease – immune system attacks the body. Examples: rheumatoid arthritis, lupus B cell – lymphocytes completed in the bone marrow that produce antibodies Cancer – disease characterized by unchecked growth of malignant tumor cells. cell-mediated immunity – provided by cytotoxic T cells clonal selection – when B cells bind to antigens they divide rapidly. cytotoxic T cell – attack invaders that have made their way into body cells by releasing pore- forming proteins that destroy infected cells. fever – elevated body temperature to slow microbial reproduction and enhance body fighting abilities helper T cell – stimulate humoral and cell-mediated immunity. histamine – chemical that relaxes muscles that surround arterioles to increase blood flow and make capillary walls leaky human immunodeficiency virus – failure of the immune system. Example: SCID humoral immunity – provided by B cells and their secreted antibodies, which attack invaders before they enter body cells. immune response – final defense of the body, immune cells destroy the toxin or microbe invader
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Chapter 32 Defense Against Disease - Chapter 32 Defense...

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