The (4)
Menstrual cycle enables the preparation of female reproductive
system for possible reproduction. (1.)
referred to
a woman's monthly bleeding. Menstrual blood flows from the
(2.)
through the small opening of the cervix and
passes out of the body through the (3.).
serves as a preparatory phase for
possible pregnancy in females. This also serves as an indicator on
whether a female is (5)
or not on a certain
time of the month. In 1-5 days, (6)
the uterine
lining breaks down and blood comes out the vagina. In 6-10 days
(7.)
the uterine lining starts to thicken again.
(8.).
I occurs in 11-18 days while in 19-28
days (9.)
the uterine lining prepares
again for a possible fertilization and implantation of zygote. If the egg
cell is not fertilized, the thickening of the uterus breaks down and
comes out of the body through (10.)
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