homeostasis - menstrual cycle Flashcards
(21 cards)
during puberty, what do the reproductive hormones cause
secondary sexual characteristics to develop such as pubic hair
what hormone do the testes produce
testosterone
what is the role of testosterone
stimulates the testes to produce sperm
what hormone do the ovaries produce
oestrogen
what happens to a women’s eggs once puberty begins
the eggs in the ovaries begin to mature
how often is an egg released - what is this called
every 28 days, this is known as ovulation
what happens in preparation for an egg to be released
the uterus lining becomes thick and spongy
what happens if sperm is present as the egg is released form the ovaries
the egg can be fertilized
what happens if an egg is fertilized
the egg can implant into the uterus wall and can develop into a baby
what happens if the egg is not fertilized
what is this often called
both the egg and the uterus lining are released
this is known as a period
what is the role of the follicle stimulating hormone (FSH)
causes an egg to mature in the ovary
what is the role of the luteinising hormone (LH)
causes the egg to be released, in other words ovulation
what is the role of estrogen and progesterone
they are involved in maintaining the uterus lining incase an egg fertilizes and implants
what gland releases FSH and where does it travel too
pituitary gland, FSH travels to the ovaries and causes an egg to mature
what does FSH trigger the making of
triggers the ovaries to produce oestogen
true of false?
estrogen encourages the pituitary gland to produce more FSH
false
it stops it from producing
after oestogen is produced and no more FSH is being released, what does the pituitary gland begin to release
LH
once the ovary has released its egg what hormone is now produced
progesterone is released
why does progesterone stop the pituitary gland from producing nay more FSH or LH
to prevent any more eggs maturing or being released
why does progesterone keep the uterus lining thick
incase an egg is fertilized and implants
what happens to the level of progesterone if an egg doesnt implant
it falls