All of the following are present prior to birth,except that the
A)pulmonary arterial resistance is high.
B)pulmonary vessels are collapsed.
C)rib cage is compressed.
D)alveoli are expanded.
E)lungs and airways contain only a small amount of fluid.

Question

Quizplus · Accepted Answer

Alveoli begin to expand and develop during late gestation (around week 36), but they are not fully mature until after birth.

All of the Following Are Present Prior to Birth,except That