Which hormone relaxes the myometrium and prevents lactation until the fetus is born?
A)Gonadotropin-releasing hormone (GnRH)
B)Follicle-stimulating hormone (FSH)
C)Progesterone
D)Estrogen

Question

Quizplus · Accepted Answer

Progesterone is sometimes called the hormone of pregnancy. Its effects in pregnancy include (1) maintenance of the thickened endometrium; (2) relaxation of smooth muscle in the myometrium, which prevents premature contractions and helps the uterus expand; (3) thickening of the myometrium, which prepares it for the muscular work of labor; (4) prevention of lactation until the fetus is born; and (5) prevention of additional maturation of ova by way of suppressing FSH and LH, thereby stopping the menstrual cycle.

Which Hormone Relaxes the Myometrium and Prevents Lactation Until the Fetus