Functions and Structure of the Uterus Explained

The uterus is a hollow muscular organ situated in the female pelvis. It is a pear-shaped (Pyriform) organ that lies between the urinary bladder in front and the rectum behind. The uterus is usually anteflexed and anteverted.
The size of the uterus in an adult female is 3 inches x 2 inches x 1 inch (7.5 cm long x 5 cm wide x 2.5 cm thick. The weight of the adult nulliparous uterus ranges from 50 to 80 g.

The uterus develops from the fused vertical part of the two Müllerian ducts.