Which of these conditions occurs when outward airflow has ceased at the end of a normal expiration
A)Intra-alveolar pressure is less than atmospheric pressure.
B)Intra-alveolar pressure is greater than atmospheric pressure.
C)Intra-alveolar pressure is equal to atmospheric pressure.
D)Intrapleural pressure is greater than atmospheric pressure.

Question

Quizplus · Accepted Answer

At the end of a normal expiration, intra-alveolar pressure is equal to atmospheric pressure, indicating that the forces driving air in and out of the lungs are balanced, and there is no net movement of air.

Which of These Conditions Occurs When Outward Airflow Has Ceased