hormones Flashcards
What does FSH do and where is it released
pituitary gland
matures egg (stimulates growth)
-> causes release of oestrogen
What does Oestrogen do and where is it released
- ovaries
thickens lining, stops the release of FSH, causes release of LH
What does LH do and where is it released. o
- pituitary gland
ovulation
What does Progesterone do and where is it released
- ovaries
maintains lining, inhibits LH + FSH release
What is stage one of the menstrual cycle?
Days 1-5
Uterus lining breaks down and it’s lost with the unfertilised egg cell
What is stage two of the menstrual cycle?
Days 6-12
Egg cell matures in the ovaries and the lining of uterus builds up again (around day 11)
What is stage three of the menstrual cycle?
Days 14
Egg cell is released from ovary (ovulation)
What is stage four of the menstrual cycle?
Days 16-28
Lining continues to thicken
If fertilised egg doesn’t implant into uterus lining then the cycle begins again
What are the 4 effects of adrenaline?
- increases heart rate + blood pressure
2.Diameter of blood vessels widen / muscles - step 2 leads to other organs narrowing
- liver cells change glycogen to glucose
where is the thyroid gland?
in the neck
what does the thyroid gland release?
thyroxine which regulates metabolism , heart rate and temperature
what do ovaries produce?
oestrogen
what does the pancreas produce?
insulin and glucagon
where are the adrenal glands?
one above each kidney
what do adrenal glands do?
produce adrenaline : triggers the ‘fight or flight’ response when the organism is presented with a dangerous situation.
