Question
The function of surfactant is/are
facilitating lung expansion
maintaining the stable size of the alveoli
to reduce the surface tension on the alveoli
all of the above
Solution
C.
to reduce the surface tension on the alveoli
Pulmonary surfactant is a mixture of lipids and proteins which is secreted by the epithelial type II cells into the alveolar space. Its main function is to reduce the surface tension at the air/liquid interface in the lung.
