cache
Forum Guru
Topics: 130
Posts: 275
|
pituitary gland is the answer
minu's explanation was on target
The estrogen inhibits ovulation by suppressing Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH), thereby "fooling the pituitary gland into thinking a woman is pregnant", therefore does not release hormones that stimulate the ovary"; it changes the secretions within the uterus and cellular structure of the lining of the uterus (endometrium) which produces areas of edema alternating with areas of dense cellularity; ovum transport is accelerated; degeneration of the corpus luteum (hormone-producing cells which ordinarily develop from the ovarian follicle if a ripened ovum has been expelled), thereby producing progesterone to prepare the lining of the uterus for implantation).
The progesterone inhibits ovulation by suppressing the LH (anterior pituitary hormone which causes a follicle to release a ripened egg and become a corpus luteum); it creates a thick cervical mucus, hampering the transport of sperm; it inhibits production of an enzyme that ordinarily permit sperm to penetrate the ovum; it slows ovum transport; it impedes implantation of an egg into the endometrium (uterine lining) because it changes that lining.
|
|
| |
| |
