Biology 3593B Study Guide - Quiz Guide: Adaptive Immune System, Innate Immune System, Natural Killer Cell
Document Summary
Primary: bone marrow (all immune cells generation), thymus (t cell maturation), generative lymphoid organs. Secondary: encapsulated: spleen and lymph nodes unencapsulated: tonsils and galt. Tonsils: accumulations of lymphoid tissue surrounding openings of digestive and respiratory tracts. Galt: small accumulations of lymphocytes found scattered beneath the epithelium throughout the gastrointestinal tract. The most prominent accumulations occur in the ileum and appendix in the form of peyer"s patches. Immune effector components have their own specific effector-niche. Innate immune system: fast, limited specificity, no memory. Killing and elimination of microorganisms through lysis by complement system and phagocytosis by specialized cells -> inflammation or activation of. Millions produced every day wit randomly generated receptors formed. Fully (stem), semi- (liver) and post-mitotic cells (heart). Cell cycle: duplication and division, first nuclear, then cell, of cell content. Stands still till indication of signals to initiate next phase. Attachment of all chromosomes to microtubuli is required.
