Orifice of the Uterus

The uterine orifice (ostium uteri) is an opening in the uterus that connects its cavity with the external environment. The hole is shaped like a circle and is located at the top of the uterus. The opening of the uterus is an important organ in a woman’s reproductive system, since through it sperm penetrate into the uterine cavity and fertilize the egg.

The opening of the uterus has a diameter of about 0.5 cm and is surrounded by a muscular layer. Inside the opening is the os of the uterus, which is a narrow canal leading to the uterine cavity. The os plays an important role in protecting the uterus from infections and other pathogenic microorganisms.

Functions of the uterine opening include:

1. Penetration of sperm and fertilization of the egg
2. Passage of menstrual blood after menstruation
3. Removing mucus from the uterus
4. Protecting the uterus from infection and other pathogens

However, the opening of the uterus can also be a site for the formation of foreign bodies, such as abortion residues, and can also cause the development of various diseases such as endometriosis, adenomyosis and others.

In general, the uterine opening is an important organ in a woman's reproductive system and requires constant monitoring and treatment if necessary.

The opening of the uterus (uteri) is a vaginal canal that opens outward through the external opening of the vaginal pharynx and continues inward toward the bladder, through which menstrual blood is released in women and eggs are produced until menarche during the prepubertal development of the body. Its relationship to the vaginal opening is twofold. Anatomically, the urogenital opening is an organic integral structure that includes an unpaired unpaired vagina and an unpaired unpaired urethra, which has the shape of a cone rounded posteriorly and downward with an expanded part - the internal opening, or urinary (renal) opening

The opening of the uterus is shaped like slits. It is formed on the sides by two lips of the wide (vaginal) section, the vestibule, connected in the perineal vault by a bridge made from the remains of the embryonic chord (hypospadias). On the anterior lip, within its dorsal section, there is a paired notch - the opening of the urethra. On either side of it are the vaginal opening and the anal opening. In the center of the posterior section, on the border between the medial edge of the vestibule and the vagina, a small depression is visible on the lateral lips, at the bottom of which the excretory duct of the Bartholin gland is visible.

The fallopian tubes are paired organs. Their wall is a folded peritoneum adjacent to the ovary; it is covered with a single layer of endothelium. Serous tubules (with underlying convolutions of their mucous membrane), which look like hollow cylinders, extend from this wall into the tube. The tubules open with a single uterine (peritoneal) opening, which is located on one of the fallopian tubes. The end of the peritoneal opening is located at a distance of about 2 cm from the uterine end of the tube.