PSY BEH 103H Lecture Notes - Lecture 3: Humoral Immunity, Immunity (Medical), Innate Immune System
13 Sep 2017
School
Department
Course
Professor
Document Summary
Adrenal glands: small glands on top of each kidney, adrenal medulla and cortex per gland, medulla: produces epinephrine, norepinephrine (fast response to stressful situations, cortex: produces cortisol. Job: disti(cid:374)guish (cid:858)self(cid:859) fro(cid:373) (cid:858)(cid:374)o(cid:374)-self(cid:859, destroy (cid:858)(cid:374)o(cid:374)-self(cid:859, two classes of immune defenses. Innate (non-specific) immunity; born with: adaptive (acquired, specific) immunity; learned. Innate immunity: first line of defense, relatively fast, our only defense within 14-16 hours after exposure, anatomical barriers: skin, mucous membranes, phagocytes (e. g. macrophages eat foreign substances, the inflammatory response: a local response to infection. Immune cells brought in to destroy/inactivate foreign invaders (attack/isolate invaders, remove debris, prepare for healing and repair) Intracellular microbes (i. e. viruses: can kill microbes inside phagocytes/macrophage, directly kills infected cells, or release cytokines and alter milieu around them (i. e. t-helper cells cause b-cell proliferation, two classes of immune defenses. Innate immunity (anatomical barriers, phagocytes, inflammation, natural killer cells)
