AIPMT 2013 Biology Solved Paper

Question : 38 of 90

Marks: +1, -0

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 :-

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
C - Alveoli - thin walled vascular bag like structures for exchange of gases

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