Female Reproductive System Flashcards
what type of cycle is oogenesis
ovarian cycle
what is oogenesis the production of
production of female gametes
where does oogenesis begin
in ovaries of fetus
where does oogenesis stop
at 1 oocyte
how many chromosomes does 1 oocyte have
46 chromosomes
where are eggs arrested in which phase of cell growth
are arrested in prophase 1(meiosis) as 1 oocytes
until when are eggs arrested in prophase 1
until puberty
what hormone is released at puberty
FSH(follicle stimulating hormone) is released
what does the release of FSH during puberty stimulate the growth of and around where
stimulates granulosa cell growth around the 1 oocyte
what does the stimulation of granulosa cell growth around the 1 oocyte form
forms zona pellucida
what happens to the follicle once puberty begins? what does the follicle secrete?
the follicle develops and secretes estrogen
how does the developing follicle secrete estrogen
by the theca cells
once the developing follicle secretes estrogen by the theca cells, what is formed?
2nd follicle formed
the secondary follicle is formed and what cells does it contain
theca and granulosa cells
after secondary follicle forms what happens to estrogen levels
high estrogen levels
what do high estrogen levels trigger to secrete
high LH secretion
what do high LH levels trigger?
ovulation
what happens during ovulation
the follicle burst and releases the secondary oocyte
where does the secondary oocyte get released into
the fallopian tube
what is the main cause of ovulation(DH)
LH
after ovulation what does the ruptured follicle form
the corpus luteum develops from the remnants of follicle
What does the corpus luteum secrete throughout pregnancy?
estradiol(estrogen) and progesterone
if fertilization does not occur for 2 weeks, what happens to corpus luteum and estrogen/progesterone levels
it degenerates into corpus albicans and sharp drop in estrogen and progesterone
where does fertilization occur
in the fallopian tube/oviduct
why does progesterone inhibit ovulation
because of negative feedback
what is the affect of high progesterone on LH and FSH levels
low LH and FSH
what is another cycle name for menstrual cycle
uterine cycle
how many phases in menstrual cycle divided into? what is the acronym
3 phases. MPS
what does m stand for
menstruation
what happens during menstration
menstrual flow (shedding of lining)
what does p stand for
proliferation
what happens during proliferative phase
high estrogen levels (uterine lining thicken in preparation for implantation)
what happens in secretory phase
high progesterone (maintains uterine linin to support a fertilized embryo)
