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eimsori [14]
3 years ago
11

What are three of the human body's defensive barriers and how do they keep the human body healthy

Biology
1 answer:
Lera25 [3.4K]3 years ago
7 0
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract. The immune system uses white blood cells and antibodies to identify and eliminate organisms that get through the body's natural barriers.
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