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

Skin

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Epithelium of urogenital tract

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Tears

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Monocytes

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Solution

The correct option is B Tears
Physiological barrier in an innate immune system is a barrier that prevents the entry of microorganisms in human body. These include tears, saliva, acidic pH in stomach, bile in intestine. Physical barrier in an innate immune system is a barrier that prevents the entry of microorganisms physically. It includes skin, mucous membrane.
Thus, the correct answer is 'Tears.'

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Similar questions

Which one of the following is a physiological barrier to the entry of microorganisms?

Assertion: pH of certain secretions in the body prevent the growth of many microorganisms.

Reason: It acts as a type of physical barrier which prevents the entry of microorganisms.

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