Physical barrier = .............. and physiol | vedclass

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(A) In the human immune system,innate immunity consists of four types of barriers:$1$. Physical barriers: These prevent the entry of microorganisms in

Vedclass · Accepted Answer

Skin,saliva in the mouth

Vedclass · Answer

(A) In the human immune system,innate immunity consists of four types of barriers:$1$. Physical barriers: These prevent the entry of microorganisms into the body. The 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.$2$. Physiological barriers: These prevent microbial growth in the body. Examples include acid in the stomach,saliva in the mouth,and tears from eyes.Therefore,the correct pair is Physical barrier = Skin and Physiological barrier = Saliva in the mouth.

Physical barrier = .............. and physiological barrier = .............

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