are in contact with the ovaries but are not continuous with them. Their funnel-shaped openings, called free openings, are fringed with fingerlike processes, pick up an ovum and draw it into the fallopian tube. Once the ovum enters the tube, it is transported to the uterus by peristalsis and gravity. Fertilization of an ovum normally takes place in the tube.
The function of the uterus is to receive the embryo that results from the fertilization of an egg cell and to sustain its life during development. The uterus is a hollow, pear-shaped organ with thick, muscular walls. This is divided into two main regions, the body and cervix (neck of the womb). The body forms the upper two-thirds of the uterus. The cervix is the lower one-third that projects into the upper part of the vagina. The cervical opening into the vagina is called the external os and this dilates dramatically during the birth.
The uterine wall is composed of three layers: the endometrium, the myometrium, and the perimetrium. The inner lining consists of specialized layer of cells, called endometrium, which undergoes partial destruction approximately every 28 days in the non-pregnant female. The middle layer, the myometrium, consists of bundles of interlaced muscular fibers. The muscular layer produces powerful rhythmic contractions that are important in the expulsion of the fetus at birth. The perimetrium consists of an outer layer that covers the body of the uterus and part of the cervix.
This is the organ that receives the male sperm during intercourse. It also forms the lower portion of the birth canal, stretching