The function of type II cells in pulmonary alveoli is to:
a. Detoxify nitrogen dioxide
b. Facilitate the diffusion of oxygen out of pulmonary capillaries
c. Perform proteolysis of mucous proteins
d. Secrete the phospholipids of surfactant
e. Utilize cilia to transport mucus out of the lungs
ANS: D
Type II cells are rounded, nonciliated cells that contain multilamellar bodies composed of phos-pholipids.
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