Innate Immune System

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8 Terms

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innate immune system

body’s first line of defense against pathogens, providing a rapid and non-specific immune response

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key components to the immune system

physical barriers, cellular defense, chemical mediators, inflammatory response

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physical barriers

skin, mucous membrane, stomach acid

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cellular defenses

phagocytes that engulf and destroy pathogens (macrophages, neutrophils)

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chemical mediators

cytokines, complement system, inteferons

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cytokines

signaling proteins that regulate immune responses

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complement system

proteins that enhance pathogen destruction

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inteferons

help cells resist viral infection