3 years ago

The first line of defense involves which structure(s)?

Medicine

2 answers:

arsen [322]3 years ago

8 0

Answer:

the answer is skin

Explanation:

I hope it helps you

SIZIF [17.4K]3 years ago

6 0

The answer is skin

The first line of defence is your innate immune system. Level one of this system consists of physical barriers like your skin and the mucosal lining in your respiratory tract. The tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.

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