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Question
Biology
Posted about 2 months ago
how does the eperdemis provide physical barriers against microbial infection
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Answer from Sia
Posted about 2 months ago
Answer
The epidermis provides physical barriers against microbial infection through several mechanisms.
Solution
a
Keratinization: The outermost layer of the epidermis is composed of dead keratinized cells, which form a tough, protective barrier that is difficult for microbes to penetrate
b
Tight Junctions: Cells in the epidermis are tightly packed and connected by tight junctions, preventing the entry of pathogens
c
Acidic pH: The surface of the skin has an acidic pH, which inhibits the growth of many microorganisms
Key Concept
Keratinization
Explanation
The process of keratinization involves the production of keratin, a protein that makes the outer layer of the skin tough and resistant to microbial invasion.

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