The uterus is a part of the female reproductive organs of human beings and animals, where the fetuses or larvae of human beings and animals develop and grow. The uterus is a unique organ for women. According to the latest modern medical research results, the uterus is the sixth organ of women, that is, women have six internal organs.

The uterus is an organ that produces menstruation and gives birth to the fetus. It is located in the center of the pelvic cavity, between the bladder and rectum. The size of the uterus is related to age and fertility. The fetus is about 7.5 cm long, 5 cm wide and 3 cm thick. The uterus can be divided into three parts: the bottom, the body and the neck. The uterine cavity is inverted triangle, about 6cm deep, and the upper two corners are "uterine horns", which lead to fallopian tubes. The lower end is narrow as an isthmus, which is about 65438±0cm long. The isthmus gradually expands during pregnancy and forms the lower uterine segment during delivery.

Extended data:

Uterine position

The uterus is located in the center of pelvic cavity, between bladder and rectum. Normal adult pregnant women's uterus is in a flexion position, and the fixing devices of the uterus are mainly the support of pelvic diaphragm and vagina and the traction and fixation of ligaments. The four pairs of ligaments are broad ligament, round ligament, main ligament and sacrococcygeal ligament.

The palace is in the shape of an inverted pear, with a flat front and a slightly convex back. The wall is wide and small, and the upper end is wide and free, facing forward and upward. The lower end is narrow and cylindrical, and it is inserted into the upper part of vagina. The average length, width and thickness of adult female uterus are 7×5×3 cm, respectively, and the volume of uterine cavity is about 5 ml.

Baidu encyclopedia-uterus