PSL201Y1 Chapter Notes -C3B, Exocytosis, Red Blood Cell
Document Summary
Lecture 3 innate immunity (text book and lecture notes complied) (black-textbook and red- lecture notes added) Mast cells: found in skin and mucosal epithelial tissue; secrete histamine. endocytose pathogens. Lymphoid tissue: all leukocytes develop from hematopoietic cells (blood-forming) stem cells in the bone marrow. B lymphocytes also fully mature in the bone marrow. Chemicals in bacteria can inhibit their enzymes while allowing ours: viruses- they are not cells. They must be in our cells to use our ribosome. Spleen, lymph nodes, tonsils, adenoids, appendix, and peyer"s patches. Lymphocytes reach maturity in central lymphoid tissue and interact with foreign. These lymphoid tissues are interconnected by blood vessels and lymphotic. 24. 3 the spleen has the same structure as the lymph node. 24. 2 lymphotic vessels (green) microforeign come inside . They can exist through the blood or vein: spleen collects worn-out erythrocytes from the blood; it is also collecting bloodborne microorganisms and foreign particles.
