What information does the student learn about alveoli? (Select all that apply.)
A)The number of functioning alveoli is determined by birth.
B)The alveoli begin to increase in size starting at 8 years of age.
C)The complexity of the alveoli increases into adulthood.
D)These structures produce surfactant.
E)Capillaries are the origin of alveoli.

Question

Quizplus · Accepted Answer

Capillaries grow into the distal respiratory units that keep subdividing (alveolarization) to maximize the surface area for gas exchange. The number of alveoli continues to increase during the first 5 to 8 years of life, after which the alveoli increase in size and complexity. Surfactant is a lipid-protein mix that is produced by type II alveolar cells.

What Information Does the Student Learn About Alveoli? (Select All