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PSY 353 Assigned Reading Immune Sys Week 6

by: Sydney McCourt

PSY 353 Assigned Reading Immune Sys Week 6 PSY 353

Marketplace > Cleveland State University > Pyscology > PSY 353 > PSY 353 Assigned Reading Immune Sys Week 6
Sydney McCourt
GPA 4.0

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About this Document

Immune System and functions
Health Pyschology
Bruner,David C
Class Notes
health, Psychology
25 ?




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This 2 page Class Notes was uploaded by Sydney McCourt on Thursday October 6, 2016. The Class Notes belongs to PSY 353 at Cleveland State University taught by Bruner,David C in Fall 2016. Since its upload, it has received 9 views. For similar materials see Health Pyschology in Pyscology at Cleveland State University.


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Date Created: 10/06/16
PSY 353 Assigned Reading Week 6 “Immune System” Immune System ● Lymphatic (lymphoid) organs make up immune system ○ Throughout body ● Development of lymphocytes (white blood cells) ○ Body’s defense against foreign substances ● Bone marrow, thymus, lymph nodes, spleen & vessels organs included ○ Bone Marrow​: produces lymphocytes in soft tissue core ○ Thymus​:endocrine gland in chest matures lymphocytes ○ Lymph nodes​: bean shaped structures, spongy tissue (majority found in neck, abdomen, & groin) capture antigens and house lymphocytes ○ Spleen​: upper left side of abdomen; functions as lymph node for blood filtering antigens; home for blood cells ■ Removes old red blood cells ○ Lymph vessels:​ cleanse body cells; affected by cancer ● “Soldiers” of Immune System: ○ White blood cells = 2 types: ■ Lymphocytes:​ discriminating in immunity = specific function ■ Phagocytes:​ scavengers engulfing antigens (nonspecific immunity: respond to any antigen) ● Macrophages: attached to tissue ● Neutrophils: circulate in blood ○ Cell mediated immunity: ■ Lymphocytes = T Cells: white blood cells matured in thymus ● Killer T ce​ ttack / destroy targets (foreign, cancerous cells & cells that have been invaded by antigen) ● Memory T cells​ remember invaders (ie: infections of the past) ○ Circulate in bloodstream ● Delayed hypersensitivity T c​ delayed immune reactions (allergies (ie: poison ivy)); produce protein stances= lymphokines: stimulate T cell growth / reproducing / attack invaders ● Helper T cel​ reports invasion to White Blood Cells; stimulate lymphocytes to attack ● Suppressor T cell​ slow down cell mediate / antibody mediated immunity ○ Antibody-mediated immunity: attacks bacteria, fungi, protozoa, and viruses in body fluids ■ B cells: l​ ymphocytes ■ Antibodies:​ protein molecule (immunoglobulins) attach to invaders ● Slow down invader ○ Easier to target ● Recruit protein substances to puncturemicroogranims = bustersing ● Find new invaders to form Memory B cells (remember attackers) ● Antibody class: IgG, IgM, IgA, IgD, IgE ● Defending Body ○ First line of defense: mucous membrane / skin ○ Nonspecific / specific immune processes ■ Phagocytes attack invaders ● Present to b cells and helper T cells ○ B cells message T cells ○ Killer T cells: destroy invades ● Development Changes ○ Increase effectiveness through adulthood then declines with older ages ● Lifestyles, Stress, Immune Functions ○ Sedentary lifestyle; smoking = impaired immune functions ○ Stress impairs immune functions


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