Question

Select the correct answer.

What hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg can successfully implant in it?

A. The pituitary gland secretes oxytocin, which maintains the endometrial lining.

B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.

C. The hypothalamus secretes gonadotropin releasing hormone, which maintains the endometrial lining.

D. The developing embryo secretes human chorionic gonadotropin, which prevents the corpus luteum from disintegrating.

E. The developing embryo takes over the production of progesterone after the breakdown of the corpus luteum to maintain the endometrial lining.

Answer 1

B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.

Step-by-step explanation:

Answer 2

The correct option is B.
For a mature woman, each month the increased level of estrogen hormone leads the pituitary gland to secrete luteinizing hormone. Once this hormone is secreted, the ovary releases a single egg which moves down to the lining of the uterus. If fertilization does not occur, the egg is shed together with the lining of the uterus in a monthly process called mensuration. If fertilization occur, then the fertilized egg attach to the lining of the uterus and placenta is formed. The fertilized egg then send signal to the ovary to keep secreting progesterone, which will sustaining the pregnancy by keeping the uterus lining thick and nourishing for the developing embryo.