sexual hormones in humans Flashcards
1
Q
seocndary sexual characteristics (s.s.c) develop during
A
puberty
2
Q
in girls ____ causes s.s.c
A
oestrogen
3
Q
in boys ____ causes s.s.c
A
testosterone
4
Q
effects of oestrogen
A
- body hair
- hips widen
- breasts develop
- menstrual cycle begins
5
Q
effects of testosterone
A
- body + facial hair
- penis + testes grows
- muscles develop
- testes start semen production
6
Q
menstrual cycle is usually ___ days
A
28
7
Q
stages of m.c
A
- menstruation
- lining rebuilds
- ovulation
- lining maintained
8
Q
ovulation occurs
A
halfway through cycle (14-15)
9
Q
ovulation is
A
the release of an egg from ovary into oviduct
10
Q
menstruation occurs if
A
egg was not fertilised (uterus lining is broken down)
11
Q
hormones in m.c
A
- oestrogen
- progesterone
- FSH
- LH
12
Q
progesterone
A
- corpus luteum
- thicken uterus lining
- inhibit FSH + LH
13
Q
FSH
A
- pituitary gland
- stimulates development of follicle in ovary
14
Q
oestrogen
A
- ovary
- thickens lining
- inhibits FSH
15
Q
LH
A
triggers ovulation
16
Q
progesterone drop causes
A
- menstruation
- triggers FSH
17
Q
developing follicle stimulates
A
oestrogen increase
18
Q
oestrogen increase triggers
A
LH
19
Q
follicle develops into
A
corpus luteum
20
Q
corpus luteum releases
A
progesterone
21
Q
if no fertilisation
A
- corpus luteums breaks down
- progesterone drops
- menstruation
22
Q
if fertilised
A
- placenta takes over progesterone production
- ovaries continue oestrogen
23
Q
describe how hormones control m.c (summary)
A
- FSH stimulates maturing of follicle (egg)
- oestrogen inhibits FSH and thickens uterus lining
- LH triggers ovulation
- progesterone inhibits FSH and LH
- progesterone + oestrogen thicken/maintain uterus lining
