A) A-trachea - long tube supported by complete cartilaginous rings for conducting inspired air
B) B-pleural membrane - surround ribs on both sides to provide cushion against rubbing.
C) C-Alveoli - thin walled vascular bag like structures for exchange of gases.
D) D-Lower end of lungs - diaphragm pulls it down during inspiration.
Correct Answer: C
You need to login to perform this action.
You will be redirected in
3 sec