Chapter 21 Flashcards
Primary function of the immune system
provides resistance to disease
2 intrinsic systems that make up the immune system
innate and adaptive
Primary structures of innate immunity
surface barriers and internal defenses
Primary structures of adaptive immunity
humoral and cellular immunity
“first line of defense”
surface barriers
“second line of defense”
cells and chemicals
Primary role of NK
- police blood and lymph
- attack cells that lack “self” cell-surface receptors
Four cardinal signs of inflammation
redness, heat, swelling, and pain
Stages of inflammation
- inflammatory chemical release
- vasodilation and increased vascular permeability
- phagocyte mobilization
Role of antimicrobial proteins
enhance innate defense
Process of fever
abnormally high body temperatures that is systemic response to invading microorganisms
Antigen
substance that can mobilize adaptive defenses and provoke an immune response
Primary immune response
cell proliferation and differentiation upon exposure to antigen for the first time
Secondary immune response
re-exposure to same antigen gives faster, more prolonged more effective response
Naturally acquired
formed in response to actual bacterial or viral infection