Select the correct option describing gonadotropin activity in a normal pregnant female

Options

A. High level of hCG stimulates the thick- ening of endometrium
B. High level of FSH and LH stimulates the thickening of endometrium
C. High level of FSH and LH facilitate implantation of the embryo
D. High level of hCG stimulates the syn- thesis of estrogen and progesterone

Explanation

To answer the question regarding gonadotropin activity in a normal pregnant female, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding Gonadotropins**: Gonadotropins are hormones that stimulate the gonads (ovaries in females). The key gonadotropins involved in pregnancy are Luteinizing Hormone (LH), Follicle-Stimulating Hormone (FSH), and Human Chorionic Gonadotropin (HCG).

2. **Role of HCG**: During pregnancy, HCG is produced by the placenta shortly after implantation. Its primary role is to maintain the corpus luteum, which is crucial for the production of progesterone in the early stages of pregnancy.

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