Physical Barriers to Pathogen Entry — NEET Biology
📚 Practice Concept📖 NCERT Source
Physical barriers: Skin on our body is the main barrier which prevents entry of the micro-organisms. Mucus coating of the epithelium lining the respiratory, gastrointestinal and urogenital tracts also help in trapping microbes entering our body.
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QuestionPractice Question
Assertion (A): Mucus coating helps protect the body from microbial infections. Reason (R): Mucus coating traps microbes entering through respiratory, gastrointestinal and urogenital tracts.
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