NEET Zoology Mechanism of Breathing MCQ Question
If the thoracic volume increases by 500 mL during inspiration, by how much does the volume of the alveoli increase assuming all the air directly fills the alveoli?
500 mL
250 mL
750 mL
1000 mL
Correct Answer
Detailed Explanation
The thoracic chamber is an air-tight chamber that houses the lungs. During inspiration, any increase in thoracic volume directly translates to an increase in alveolar volume as air fills the lungs to maintain pressure equilibrium.
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