ï»¿ Which one of the following acts as a physiological barrier to the entry of microorganisms in the human body?Â  from Biology Human Health and Disease Class 12 Nagaland Board

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

• Tears

• Monocytes

• Skin

• Epithelium of urogenitalÂ tract

A.

Tears

Physiological barriers to the entry of microorganisms in the human body are tears in eyes, saliva in mouth and HCl in the stomach.The enzymes lysozymes are found in tears and saliva and inhibit the synthesis of peptidoglycan present in the cell wall of microorganisms especially eubacteria.

Physiological barriers to the entry of microorganisms in the human body are tears in eyes, saliva in mouth and HCl in the stomach.The enzymes lysozymes are found in tears and saliva and inhibit the synthesis of peptidoglycan present in the cell wall of microorganisms especially eubacteria.

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