KNPE 125 Study Guide - Midterm Guide: Chronic Obstructive Pulmonary Disease, Peripheral Chemoreceptors, Tidal Volume
1 Apr 2017
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Document Summary
Pathogens: microorganisms that cause specific disease/threaten health, 4 classes: viruses, parasites, bacteria, fungi. Cells of the immune system: leukocytes (white blood cells) Peripheral lymphoid tissue (in spleen: filters bodily fluids, removes potentially harmful material, stores leukocytes. Steps of inflammation: macrophages engulf foreign material, they are phagocytes so they perform phagocytosis, have receptors that detect pathogens, release cytokines (hormones that signal other cells) call in reinforcements! Leukocytes continue to clear infection: the reinforcements remain at injury site until everything is cleared up. Foreign agents that get past the innate immune defense. Antibodies: neutralize/block antigen activity, clump pathogens into a big group for easy clean up, enhance activity of macrophages. Memory b cells b lymphocytes create clones when activated by an antigen = memory allows for quick response for next time. Lymphocytes remember new antigens 1st exposure immune response takes 10-17 days while. 2nd exposure is much quicker at 2-7 days.
