menstrual cycle and pregnancy hormones Flashcards
(15 cards)
where is FSH secreted from
anterior pituitary gland
what does FSH do
stimulates oestrogen production and maturation of a follicle
where is oestrogen secreted from
the developing follicle
what does oestrogen do
triggers the repair of the endometrium
inhibits FSH and stimulates LH
what does LH do
initiates ovulation and causes the graafian follicle to develop into the corpus luteum
where is LH secreted from
anterior pituitary gland
where is progestrone secreted from
corpus luteum
what does progestrone do
causes further development of endometrium before menstruation
where is human chorionic gonadotrophin secreted from for the first 16 weeks of pregnancy
the embryo
what happens to hormone levels before birth
oestrogen and progesterone decrease so uterine wall can contract
where is oxytocin secreted from
posterior pituitary gland
what is the role of oxytocin in birth
stimulates contraction of uterine wall which stimulates the production of more oxytocin through positive feedback
where is prolactin secreted from and what does it do
anterior lobe of pituitary gland and stimulates production of milk through mammary glands
