in a female play a vital role in sexual and reproductive
activity like male. Hypothalamus is situated in the
brain which releases a hormone to stimulate pituitary
gland. Even though there is regular release of hormones
from Hypothalamus, decline and raise in accordance
with the emotions, feeling pertaining to their own
visual and sensory perceptions. The stimulated pituitary
releases two hormones which is similar to the males.
The Follicular stimulating hormone and Luetinising
hormones stimulate the ovaries to release a ovum every
month and release of “Oestrogen and progesterone”
hormones. They regulate feminity, periods and make
an individual to conceive.
How hormones regulate a woman's fertility
A woman's ovaries contain
200,000 to 400,000 egg follicles--small sacs that
contain the ingredients needed to form ripened eggs.
Over a two-week period in a woman's monthly cycle,
FSH causes several follicles in the ovaries to ripen
and mature. FSH also orders the ovaries to produce
estrogen, which in turn, launches the manufacture
of large amounts of LH hormone. LH hormone stimulates
the release of an egg from the largest follicle into
the fallopian tubes - a process called ovulation.
LH hormone also stimulates the follicle to produce
corpus luteum - a collection of yellow tissue that
manufactures progesterone. Progesterone and estrogen
work together to thicken and prepare the lining of
the uterus for a fertilized egg. Together, these hormones
swell the lining of the uterus with blood, making
it easier for a fertilized egg to implant itself there.
the egg is fertilized
An egg is usually fertilized
by sperm within the fallopian tubes - but only if
the woman has sex with a man around the time the egg
is released. The sperm must penetrate the egg to fertilize
Sperm can survive for six days after entering a woman's
vagina and can fertilize the egg at any time during
this period. However, research shows that fertilization
is most likely to occur two days before or on the
day the egg is released. The fertilized egg then moves
on to the uterus, where it implants and grows into
an embryo and pregnancy results.
The Unfertilized Egg
If the egg is not penetrated
by sperm, it lives for 12 to 24 hours. The egg and
the bloody lining of the uterus then slough off, traveling
out of the uterus, the cervix and vagina - a process
called the woman's menstrual period.