Labels:bulletin board | dialog box | web site | window OCR: Hormonal Changes during Pregnancy Following implantation. embryonic cells begin to secrete human chorionic gonadotropin. Human chorionic gonadotropin maintains the corpus luteum which continues to secrete estrogen and progesterone. The developing placenta secretes large quantities of estrogen and progesterone. Placental estrogen pue progesterone Stimulate the uterine lining to continue development Maintain the uterine lining. Inhibit the anterior pituitary's secretion of follicle- stimulating hormone (FSH) and luteinizing hormone (LH). Stimulate development mammary glands Inhibit uterine contractions (progesterone) Enlarge the reproductive organs (estrogen). Relaxin from the corpus luteum inhibits uterine contractions and relaxes the pelvic ligaments The placenta secretes placental lactoge ...
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