Which of the following are true physiological benefits of surfactant?
I.It reduces the work of breathing.
II.It reduces the distending pressure required to keep small alveoli open.
III.It provides a stabilizing influence to alveoli of different sizes.
IV.It enhances the elastic properties of the lung.

Question

Quizplus · Accepted Answer

In summary, the physiological importance of pulmonary surfactant is that 
(1) it reduces the work of breathing, 
(2) it reduces the distending pressure required to keep small alveoli open, and 
(3) it provides a stabilizing influence, allowing alveoli of different sizes to coexist at the same distending pressure.

Which of the Following Are True Physiological Benefits of Surfactant