The female pelvis is the passage through which the fetus is delivered, so there are significant differences between male and female pelvis. The main features of the female pelvis are: the overall shape of the pelvis is short and wide, the upper mouth is round and , the diameters of the lower mouth (sagittal diameter and transverse diameter) are larger than those of men, and the coccyx has greater mobility. The joint is also , and the ischial tuberosity is valgus, so that the diameters of the pelvis can be lengthened to a certain extent during childbirth. The of the pelvis The symphysis pubis is short and wide, the angle of the pubic arch is larger 90-100 degrees, the protruding sacral promontory is small, the ischial spine is flat, and the pelvic cavity is cylindrical, shallow and wide. The entrance to the pelvis is almost round or oval. The pelvic outlet is wide and the ischial tuberosity is wide. Colour: white Material: PVC Size: 24.5x17x17cm Package Contents: 1 * Pelvis model Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.