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Question

Which of the following provide the greatest surface area for gas exchange?


A

Glottis

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B

Alveoli

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C

Pharynx

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D

Bronchioles

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Solution

The correct option is B

Alveoli


A pair of human lungs typically consists of about 700 million alveoli, which are the basic units of respiration, and together produce about 70 square metres of surface area.


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