select the correct answer.\nwhat hormonal change occurs after fertilization that causes the endometrial…

select the correct answer.\nwhat hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg can successfully implant in it?\n\na. the pituitary gland secretes oxytocin and maintains the endometrial lining.\nb. the pituitary gland secretes follicle - stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.\nc. the hypothalamus secretes gonadotropin - releasing hormone, which maintains the endometrial lining.\nd. the membrane surrounding the embryo secretes human chorionic gonadotropin, which prevents the corpus luteum from disintegrating.\ne. the developing embryo prevents the production of progesterone after the breakdown of the corpus luteum to maintain the endometrial lining.

select the correct answer.\nwhat hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg can successfully implant in it?\n\na. the pituitary gland secretes oxytocin and maintains the endometrial lining.\nb. the pituitary gland secretes follicle - stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.\nc. the hypothalamus secretes gonadotropin - releasing hormone, which maintains the endometrial lining.\nd. the membrane surrounding the embryo secretes human chorionic gonadotropin, which prevents the corpus luteum from disintegrating.\ne. the developing embryo prevents the production of progesterone after the breakdown of the corpus luteum to maintain the endometrial lining.

Answer

Brief Explanations:

After fertilization, the membrane surrounding the embryo (trophoblast cells) secretes human chorionic gonadotropin (hCG). hCG acts on the corpus luteum, preventing it from disintegrating. The corpus luteum continues to secrete progesterone which maintains the endometrial lining for the implantation of the fertilized egg. Oxytocin is not involved in maintaining the endometrial lining. Follicle - stimulating hormone acts before fertilization in the follicular phase. Gonadotropin - releasing hormone regulates the anterior pituitary's secretion of gonadotropins but not directly the maintenance of the endometrial lining post - fertilization. Preventing progesterone production would not maintain the endometrial lining.

Answer:

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