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Human Bio chapt 10

bio

QuestionAnswer
what are the three lines of defense? First line of defense: Body barriers Second line of defense: non-specific responses Third line of Defense: specific immune responses
First line of defense: Body barriers-common defense includes skin, digestive tract, eyes. Body secretions. body flushes. friendly microbes prevent foreign bacteria from taking hold
Second line of Defense: Inflammation: acute inflammation blood components involved-plasma proteins; fast acting WBCs: neutrophils, eosinophils, basophils; macrophages Classic sequence- tissue damage, tissue mast cells, capillaries release plasma proteins, clotting factors
Third line of defense: specific immune response-WBCs involved: macrophages, lymphocytes (T and B and NK cells) Classic sequence:recognition of antigen, repeated cell divisions, differentation into effector and memory cells
Classic sequence of third line of defense: Classic sequence:recognition of antigen, repeated cell divisions, differentation into effector and memory cells
Classic sequence of second line of defense: Classic sequence- tissue damage, tissue mast cells, capillaries release plasma proteins, clotting factors
Innate immunity launched quickly when tissue is damaged or when the body detects the invasion of microbes.
Adaptive immunity counter attack in which lymphocytes and proteins attack the invading microbes.
B cells produce what? Antibodies which in turn attack invading pathogens, called antibody mediated immunity
T cells attack... the pathogen directly which is called cell mediated immunity
Define Specificity; When all clones of a lymphocyte will taregt only one kind of antigen
active immunization a vaccine injected into the body which illicits a response for the production of effector cells and memory cells
passive immunization an injection of purified antibodies which help to defend the body against pathogens
Created by: taylorvv
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