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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

A

A trachea long tube supported by complete caritlaginous rings for conducting inspired air

B

B-pleural memebrane surround ribs on both sides to provide cushinon against rubbing

C

C-alveoloi thin walled vascular bag like structures ffor exchanged of gases

D

D-lower end of lungs diaphragm pulls it down during inspiration

Text Solution

Verified by Experts

The correct Answer is:
C
C- Alveoli are thin walled vascualr bag like structures for exchange of gases.A trachea or wind pipe is an air conducting tube through which transport of gases takes place. B -pleural memebrane is double layered which reduces friction on the lung surface.D- diaphragham is involved in the inspiration and expriation p[rocess of breathing.
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