Question

Which organ system provides the body's first line of defense against the entry of most pathogens into the human body? A.urinary B.respiratory C.cardiovascular D.integumentary E.digestive

Answer 1

B. respiratory

Hope it helps.

Answer 2

The organ system which provides the body's first line of defence against the entry of most pathogens into the human body is Integumentary System.

Option (D).

Explanation:

• Integumentary System refers to the skin and the system it creates through its various layers and appendages.

• As it is known the environment consists of pathogens and our skin layer acts as the first layer of defense to these pathogens which can be bacteria, viruses, etc.

• It is because of the Integumentary System that our body is protected from several disease-causing pathogens which may also be life-threatening at times.

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