Q. Which of the following acts as a physiological barrier to the entry of microorganisms in human body?
A) Skin
B) Epithelium of urogenital tract
C) Tears
D) Monocytes
Explanation
[Solution from source] Physiological barriers to infection include acid in the stomach, saliva in the mouth and tears from the eyes, which prevent microbial growth. Skin and the mucus-coated epithelium of the urogenital tract are physical barriers, and monocytes are cellular barriers. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.