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28 Cards in this Set
- Front
- Back
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internal defense mechanism against pathogens
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immune system |
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the immune system that is immediate, non-specific immunity, germline encoded, and has no learning process or memory |
innate immune system |
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the immune system that has acquired specific immunity, develops throughout our life and has specific recognition and memory
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adaptive immune system
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What are the 3 components of the innate immune system?
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first line defenses, sensor system, innate effector actions |
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What do the first line defenses of the innate immune system do? |
blocks entry |
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What do the sensor systems of the innate immune system do? |
detect invasion |
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What do the innate effector actions of the innate immune system do?
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destroy invaders
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these are barriers blocking entry
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first line defenses |
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these detect when invaders breach the innate immune system
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sensor systems |
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these work to destroy invaders |
innate effector actions
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What are the 4 first line defenses?
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skin, mucous membranes, antimicrobial substances, normal microbiota |
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What first line defense is not a part of the immune system but provides considerable protection? |
normal microbiota |
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the largest organ in our body that is difficult for microbes to penetrate, impermeable and inhospitable
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skin
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many layers of epithelial cells |
epidermis
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the outermost later of epithelial cells of the epidermis are dead and filled with what?
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keratin |
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what are the mucous membranes of the innate immune system? |
digestive, respiratory, genitourinary tracts |
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this removes microbes upwards towards the throat to be swallowed |
mucociliary escalator |
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wormlike squeezing movement of intestines until secretion |
peristalsis |
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what is the pH of our stomach?
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2 |
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what are the 3 layers of skin?
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hypodermis, dermis, epidermis |
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a microorganism that can cause disease |
pathogen |
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what specifically in the microorganism triggers the immune system |
antigen |
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substances produced by our body that want to rid of microbes |
antimicrobial substances |
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accumulates from perspiration and protects the skin |
salt |
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this degrades peptidoglycan |
lysozyme |
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this kills most bacteria
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stomach acid
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this uses H202 to form antimicrobial oxidized compounds
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peroxidase enzymes
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a protein that binds iron, a major element for microbes |
lactoferrin |
