The tiny air sacs present in human lungs is called_______.

Alveoli

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Bronchus

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Bronchioles

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All of the above

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Solution

The correct option is A Alveoli
Alveoli are tiny air sacs present in the lungs which appears as a bunch of grapes. These are also known as pulmonary alveoli. They mainly promote the exchange of gases. Whereas, nephrons are classified into renal corpuscle and renal tubule. These are mainly concerned with blood filtration.

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