Z-F female sex hormones Flashcards
1
Q
where is GnRH released from?
A
hypothalamus
2
Q
what does GnRH stimulate? and to produce what?
A
anterior pituitary to release LH and FSH
3
Q
how does negative feedback of GnRH via LH and FSH work?
A
LH and FSH stimulate the development of follicles in the ovaries
the theca granulosa cells around the follicles secrete oestrogen
oestrogen has a negative feedback effect on the hypothalamus and ant pit to suppress GnRH, LH and FSH
4
Q
which female secondary sexual characteristics does oestrogen stimulate?
A
- breast tissue development
- growth and development of the female sex organs (vulva, vagina and uterus) at puberty
- blood vessel development in the uterus
- development of the endometrium
5
Q
what does the corpus luteum produce?
A
progesterone
6
Q
from 10 weeks gestation onwards, what produces progesterone?
A
the placenta
7
Q
what does progesterone act to do?
A
- thicken and maintain the endometrium
- thicken the cervical mucous
- increase body temperature
