Full term pregnancy (fetus at term): implantation of a fertilized egg in the uterus.
Vertebral column: bony vertical axis extending from the skull to the pelvis.
Sacrum: bone that is jointed with the hipbone to form the pelvis.
Rectum: last part of the large intestine, between the sigmoid and the anus.
Urinary bladder: pocket in which urine collects.
Vagina: internal female genital organ, between the vulva and the uterus.
Symphysis pubis: semi-mobile pubic joint.
External cervical bone: external opening of the neck of the uterus.
Internal cervical bone: internal opening of the neck of the uterus.
Fetus: the gestation of a baby.
Uterus: female genital organ that contains the fertilized egg during its development.
Placenta: organ that connect a fetus to the body of its mother during its development.