Which is the main physical barrier in our bod | vedclass

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(C) The human body has several lines of defense against pathogens. The first line of defense consists of physical and physiological barriers. The $Ski

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Skin

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(C) The human body has several lines of defense against pathogens. The first line of defense consists of physical and physiological barriers. The $Skin$ is the main physical barrier that prevents the entry of microorganisms into the body. Mucus, saliva, and tears are considered physiological or chemical barriers that trap or destroy pathogens.

Which is the main physical barrier in our body?

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