Question

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was :

• A. High level circulating HCG to stimulate endometrial thickening.
• B. High levels of FSH and LH in uterus to stimulate endometrial thickening.
• C. High level of circulating HCG to stimulate estrogen and progesterone synthesis.
• D. High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo.

Answer 1

The correct option is C High level of circulating HCG to stimulate estrogen and progesterone synthesis.

Pregnancy can be confirmed by detecting the presence of human chorionic gonadotropin (HCG) in the blood or urine of pregnant women. HCG is a hormone produced by the placenta after implantation.

The main function of HCG is to maintain corpus luteum so as to allow the secretion of the hormone progesterone and estrogen. Progesterone enriches the uterus with a thick lining of blood vessels and capillaries so that it can sustain the growing foetus.

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result was concluded that hCG injections in the luteal phase stimulate estrogen and progesterone production where progesterone increased before estrogen. A high level of hCG stimulates endometrial thickening also.
When luteinizing hormone (LH) and FSH levels increase they stimulate ovulation, or the release of a mature oocyte into the fallopian tubes.

So, the correct answer is "option C".