Question

The nursing instructor is teaching a class on the physiologic properities involved with the birthing process. The instructor determines the session is successful when the students correctly match surfactant with which function?
a. It expands the lungs with breaths.
b. It keeps alveoli from collapsing with breaths.
c. It allows oxygen to move in the lungs.
d. It removes fluid from the lungs.

Answer 1

Answer:

b. It keeps alveoli from collapsing with breaths.

Explanation:

Surfactants are highly surface active agents which are formed from a protein and lipid complex. It comprises of a hydrophobic and hydrophilic portion and its sole purpose is to control the tension at the air-liquid interface and thereby lower the surface tension. Surfactants are produced by the type II aveolar pneumocytes in the lungs.

Surfactants are needed in order to aid breathing and prevent straining oneself, it also prevents the lungs from collapsing during breathing, a term known as atelectasis.