Each female has a pair of ovaries, located in the pelvic cavity.
One female gamete (ovum) is released per menstrual cycle (about 28 days).
At midperiod, the mature ovum is expelled from the follicle onto the surface of the ovary. The free ovum is picked up by the uterine tube.
After the ovum has been expelled from the follicle, the resulting cavity is filled with a yellowish material known as the corpus luteum.
The corpus luteum secretes primarily progesterone, a hormone that helps prepare the uterus for pregnancy.
The uterus is a single pear-shaped organ located within the pelvic cavity of the female. The inner lining of the uterus is known as the endometrium.
The amniotic sac surrounds the embryo. The embryo floats free, surrounded by amniotic fluid.
The embryo has an umbilical cord that originates in the center of its anterior abdomen. The umbilical cord is attached to the wall of the uterus by a special structure known as the placenta.
The cervix, the inferior end of the uterus, is inserted into the top of the vagina. Through the center of the cervix is the cervical canal.
Caldwell-Moloy Classification of Female Pelvis study categorizes female pelvis by shape. It illustrates those types that are better and those that are less well suited for childbirth.
Towards the end of pregnancy, it begins to form a fluid substance, colostrum.
Colostrum consists most importantly of antibodies that protect the newborn during the first 6 months of life.
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