Question

What effect does progesterone have on the pituitary gland? (menstrual cycle)

Answer 1

pro·ges·ter·one [prō jéstə rn]
noun
sex hormone: a sex hormone produced in women, first by the corpus luteum of the ovary to prepare the womb for the fertilized ovum, and later by the placenta to maintain pregnancy.
Formula: C21H30O2

Answer 2

Progesterone, hormone formed by the granulosa cells of the corpus luteum of the ovary. The corpus luteum is a structure in the ovary that develops at the site where a mature egg was released at ovulation. Therefore the level of progesterone rises in the second half of the menstrual cycle (see Menstruation). If the released ovum is not fertilized, production of progesterone falls just before the onset of the next menstrual cycle and the corpus luteum degenerates. Progesterone was isolated and crystallized by three independent groups of investigators in 1934. It is a steroid hormone, a compound possessing the same chemical nucleus as the female estrogenic hormones and the male androgenic hormones, as well as cholesterol and adrenal steroid hormones. The principal function of progesterone is the preparation of the mucous membrane of the uterus for the reception of the ovum. The hormone also stimulates the formation of saclike structures in the lacteal glands in preparation for their function of producing milk, and inhibits the release in the pituitary of prolactin hormone.

Answer 3

(plural men·stru·al cy·cles)
noun
cycle of ovulation and menstruation: the monthly process of ovulation and menstruation that occurs between puberty and menopause in women and female primates who are not pregnant

Answer 4

Menstruation, periodic vaginal discharge in humans and other mammals, consisting of blood and cells shed from the endometrium, or lining of the uterus (see Reproductive System). Menstruation accompanies a woman's childbearing years, usually beginning between the ages of 10 and 16, at puberty, and most often ceasing between the ages of 45 and 50, at menopause. Menstruation is part of the process that prepares a woman for pregnancy. Each month the lining of the uterus thickens; if pregnancy does not occur, this lining breaks down and is discharged through the vagina. The three to seven days that menstruation lasts is called the menstrual period.

Answer 5

Oh wow thanks xD
all I was looking for was it's effect on the production of FSH and LH, esp contraceptives

Answer 6

it inhibits fsh synthesis

Answer 7

what about LH? is that oestrogen?