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Question

The total number of alveoli in both lungs are


3000 million

300 million

3000 billion

300 billion

A

3000 million

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B

300 million

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C

3000 billion

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D

300 billion

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Solution

The correct option is B

300 million

There are about 300 million alveoli in both Lungs which increase the surface area for the exchange of respiratory gases.


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