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NEET 2011
Exam
NEET
Year
2011
Subject
Zoology
Chapter
Human Health and Diseases

NEET 2011 · Zoology · Human Health and Diseases

Which one of the following acts as a physiological barrier to the...

Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?

Options

  1. ATears
  2. BMonocytes
  3. CSkin
  4. DEpithelium of urogenital tract

Correct answer

A. Tears

Step-by-step solution

Physiological barriers to the entry of microorganisms in human body are tears in eyes, saliva in mouth and HCl\mathrm{HCl} in stomach. The enzyme lysozyme is found in tears and saliva, and inhibits the synthesis of peptidoglycan present in the cell wall of microorganisms especially eubacteria.
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