Where is the corpus luteum
corpus luteum
after ovulation the cells of the
follicle which did not leave with the OA
site into the oviduct
form a brief corpus hemorrhagic them as
blood clots from the rupture and then
forms a temporary endocrine structure
known as the corpus luteum this is
primarily composed of the thecal cells
and the follicular cells which undergo
changes known as lutein ization in the
maturing follicle substances in the
follicular fluid inhibit this process
which then occurs after the follicle
ruptures these cells then form the small
and large luteal cells with the
follicular cells forming the larger
cells and the thecal cells form in the
smaller cells which then metabolize
cholesterol to produce androgens and
from these androgens to produce
progesterone instead of estrogen at
least primarily some estrogen is also
produced as are other signals such as
inhibin egg this is because new enzymes
have been produced for the conversion of
these androgens into progesterone under
the influence of LH at ovulation the
corpus luteum will be maintained for
about seven to fourteen days after
ovulation unless the signal from a
developing embryo human chorionic
gonadotropin is released which in which
case the corpus luteum will be
maintained for another three months
secreting the progesterone which means
the uterine lining maintains the uterine
lining that the embryo has attached to
um at which point then the placenta
three months later is making sufficient
hormones to maintain itself if
implantation and the signal 8c
she are not produced then the corpus
luteum will break down into the corpus
albicans and ultimately from their scar
tissue as a new menstrual cycle begins
the progestins in birth control pills
are mimicking the action of the
progesterone produced by the corpus
luteum in case of pregnancy which then
inhibits on subsequent menstrual cycle
from beginning
