Question

Choose the true statement about pregnancy. There is one correct answer.

A. The most common pregnancy test measures the concentration of a hormone produced by the placenta.
B. Progesterone levels remain low throughout pregnancy.
C. The corpus luteum remains large and produces progesterone throughout preganancy.
D. Nutrients can cross the placenta, but red blood cells generally cannot.

Answer 1

The true statement about pregnancy is that the most common pregnancy test measures the concentration of a hormone produced by the placenta. The corpus luteum remains large and produces progesterone throughout pregnancy, and nutrients can cross the placenta, but red blood cells generally cannot.

Step-by-step explanation:

During pregnancy, the most common pregnancy test measures the concentration of a hormone produced by the placenta, not the corpus luteum. This hormone is called human chorionic gonadotropin (hCG).

The corpus luteum, however, remains large and produces progesterone throughout pregnancy to maintain the pregnancy and inhibit uterine contractions. Additionally, nutrients can cross the placenta, but red blood cells generally cannot.