Which of the following factors keeps the alveoli expanded?
A)a pneumothorax
B)negative pleural pressure
C)alveolar pressure being equal to atmospheric pressure
D)a reduction in surfactant
E)negative intra-alveolar pressure

Question

Quizplus · Accepted Answer

The negative pleural pressure keeps the alveoli expanded by pulling the lungs outward, which creates negative pressure in the alveoli. This negative pressure helps to keep the alveoli inflated by resisting the elastic recoil of the lung tissue.

Which of the Following Factors Keeps the Alveoli Expanded