BIOL 2120K Lecture 13: Immune System (Lecture 11 & 13)
Document Summary
Mucosal membranes - areas where mucus is produced to ward off anything getting in. Immune cells are located all over the body. Mast cells - center of hemopoeisis; located in connective tissue throughout your body. (related to basophils but not the same). Lymphatic tissues hold t-cells, b-cells, nk cells, and macrophages & dendritic cells (monocytes descendants) B-cells (humoral) so they produce something that is present in your fluid. However, it can be bad for your body as well. Degrades and presents the cell so that the adaptive immune system can head over. Nk cells - innate immunity because they are nonspecific. Adaptive immunity - two branches (b and t cells) - has memory. Involves t-lymphocytes (cell managers of immune system; release cytokines which stimulate development and multiplication of wbcs) Audio recording started: 8:23 am thursday, october 6, 2016. Tcr, antigen receptor of t-lymphocyte (interleukin activates t cells) Pathogenic organisms are detected due to their antigens.
