Lecture 37: Female Anatomy Flashcards
oocyte
immature egg
follicular cells
surround oocyte
ovarian medulla
where blood vessles are
what differentiates first?
primordial follicles
fertilization
in fallopian tube
should be in ampulla (probs other wise)
male and females cells merge
transport
cillia
isthmus/falopian tube
what collects ovum?
fimbria
due to chem attraction
ovum and hormone production
in the ovary
ovaries produce ova
where is selective barrier?
cervix
barrier from organisms and sperm
sperm deposition
in vagina
contraction
myometrium of uterus
implantation
endometrium of uterus
oogonia numbers
females are born iwth all they will ever have (cant make more)
born iwth 200,000-2 mill
40,000 at puberty
about 400 mature over womans life time
oogonia
what germ cells become after migrating to ovary
they divide (mitosis) most degenerate (atresia)
SOME oogonia
become primary oocytes
then inactive till pubperty
oogonia every month
hormone release causes sveral follicles to matuer
2 things can happen to mature oogonia:
penetrated by sperm: fertilized
no prenetration: oogonia dies
menses
degeneration and sloughing of endometrium functional zone (mensturation)
proliferative phase
regrowth of endometrium in response to estrodial from follicles
secretory phase
endometrial glands secrete mucous in response to progesterone and estrogen to prep for ovum
if ovum doesnt attach to endometrium
layer sloughed away
uterine cycle
menses
proliferative phase
secretory phase
endometrium:
stratum functionalis
straum basalis
endometrium: stratum functionalis
shed during menstration
stratum basalis
replace strt funct. every month
myometrium
3 layers smooth muscle
perimetrium
viseceral peritoneum
slide 6
6
ovarian follicle
basic structural unit of ovary
developing follicle cointains one maturing oocyte (egg)
follicle is PRIMARY ENDOCRINE tissue in ovary during FIRST half of ovarian cycle- synths and secretes estradiol
estradiol
most potent form of estrogens
progression of ovarin follicle
primary oocyte in primordial follicle
antral follcile
mature follicle
2 cells for estradiol production
theca cells
granulosa cells
hromones for estradiol prodcution
LH
FSH
Theca cell
cholesterol + LH–> progesterone–> androsterone
THEY CANT CONVERT ANDROSTENEDIONE TO ESTRADIOL
Granulosa cell
Androstenedione-> testosterone + FSH and aromatase–> estradiol
CANNT CONVERT CHOLESTEROL TO ANDROSTENEDIONE
where do oocytes mature
in developing ovarian follicles
when does reproductive ability end
at menopause
when does ability to release eggs start?
at ppuberty
release one at a time
slides
11-19
