Which of the following statements concerning pulmonary surfactant is incorrect?
A) pulmonary surfactant is secreted by Type II alveolar cells.
B) pulmonary surfactant is deficient in newborn respiratory distress syndrome.
C) pulmonary surfactant promotes elastic recoil of the lungs.
D) the cohesive force between a water molecule and an adjacent pulmonary surfactant molecule is much lower than the cohesive force between two adjacent water molecules.
E) pulmonary surfactant reduces surface tension.

Question

Quizplus · Accepted Answer

Pulmonary surfactant actually reduces the surface tension of the fluid lining the alveoli, which in turn prevents the collapse of the alveoli during expiration. It does not promote elastic recoil of the lungs. All the other options are correct.

Which of the Following Statements Concerning Pulmonary Surfactant Is Incorrect