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Growth, Development, and Reproduction of Organisms: Human Body Systems
Innate Immune System
Description
Innate Immune System
The innate immune system is the body’s first line of defense against harmful invaders like bacteria, viruses, and fungi. It provides a fast and general response to pathogens, working within minutes to stop infections from spreading. Unlike the adaptive immun...
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Transcript
Every day, microbes from the air, food, and surfaces try to enter your body. The innate immune system is your body’s built-in first line of defense.
The skin, the body’s largest organ, is also one of its strongest barriers. Its outer layer forms a barrier that blocks most microbes.
However, areas like the inner surface of your mouth,...
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