Class 11 NEET Biology Breathing and Exchange of Gases

Question : 32 of 65

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The figure shows a diagrammatic view of human respiratory system with labels A,B,C and D. Select the option which gives correct identification and main function and \/ or characteristic.

(NEET 2013)

C - Alveoli - Thin walled vascular bag like structures for exchange of gases.
D - Lower end of lungs - Diaphragm pulls it down during inspiration.
A - Trachea - Long tube supported by complete cartilaginous rings for conducting inspired air.
B - Pleural membrane - Surround ribs on both sides to provide cushion against rubbing.

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