Which of the following is most likely to pass through the placental wall?
A)Carbon dioxide
B)Most bacteria
C)Red blood cells
D)Hormones

Question

Quizplus · Accepted Answer

Carbon dioxide is a small molecule that can easily diffuse across the placental wall, unlike larger structures like bacteria or red blood cells. Hormones can also pass through, but carbon dioxide is more directly involved in the exchange process between mother and fetus.

Which of the Following Is Most Likely to Pass Through