Expiration will take place when there is: A. Positive intrapulmon… - Vidyadip

MCQ

Expiration will take place when there is:
A. Positive intrapulmonary pressure
B. Negative intrapulmonary pressure
C. Less pressure within lungs as compared to atmospheric pressure

A
(C)
B
(A)
C
(B) and (C)
D
(B)

✓

Answer

(b) (A)
Explanation: Expiration is the release of carbon dioxide-rich air from the thoracic cavity. When the volume of air decreases and pressure increase the air from the chest moves out. This kind of pressure is called positive intrapulmonary pressure.

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