What is the shape of the fallopian tube?

What is the shape of the fallopian tube? Perhaps female friends don’t pay much attention to this issue, because in life, few women pay attention to these reproductive health issues. But in fact, I hope that female friends can understand that due to the special physiological structure of women, reproductive health issues need to be paid special attention to and cared for, otherwise it is easy to be harmed by some fallopian tube diseases. Therefore, I will now introduce the shape and structural characteristics of the fallopian tube.

(1) The fimbria of the fallopian tube: Under normal circumstances, the fimbria of the fallopian tube is a physiological sphincter and a mobile receptor, composed of serosa, smooth muscle and mucosa. Located at the distal end of the ampulla, covering the surface of the ovary. The fimbria has sparse muscle fibers but abundant mucosal folds. The fimbria mucosa has deep grooves between the petal-shaped folds, giving it a large area. The mucosal epithelium is composed of ciliated cells, secretory cells and spike cells. The spike-shaped cells have dense nuclei and no cytoplasm and are located in the basal layer of the mucosal folds close to the secretory cells. Under normal circumstances, ciliated cells account for more than 60% of the mucosal epithelial cells, and the movement of cilia is toward the uterine cavity, which helps the transport of eggs.

Oocyte retrieval is usually achieved through direct contact between the cilia at the fimbria of the fallopian tube and the surface of the ovary. At this time, the ovarian ligament and the fallopian tube umbrella must move in coordination with the ovarian mesentery and the fallopian tube mesentery to coordinate the rotation of the ovary and the movement of the fallopian tube umbrella on the ovary so that the egg can enter the fallopian tube smoothly.

(2) Ampulla of the fallopian tube: The ampulla of the fallopian tube refers to the section from the opening of the abdominal cavity of the fallopian tube to the connection between the ampulla and the isthmus, which is about 5 to 10 cm long. The diameter of the tube cavity at the connection between the ampulla and the isthmus is only 1 to 2 mm, while the diameter near the fimbria can reach 1 cm. The widest part of the fallopian tube has the most complex mucosal morphology, and the lumen is filled with complex mucosal folds composed of ciliated cells, secretory cells and spike cells. Among them, ciliated cells account for 40% to 60%, which contain abundant microcilia, and the cilia move toward the uterine cavity. During the menstrual cycle, the activity of mucosal cells varies greatly.

During the preovulatory period, the non-ciliated cells swell with secretions and become distinct polyhedral in shape. Immediately after ovulation, these glandular cells rupture and discharge their contents into the lumen, presumably to nourish the egg. The cell membrane quickly repairs itself, and fertilization can only occur on the healthy mucosal surface of the ampulla. It is the place where sperm and egg are fertilized.

The above is some analysis and introduction about the shape of fallopian tubes. I hope that women, whether married or unmarried, can pay attention to these issues. In many cases, if they know more about these common sense of reproductive health, then even if they encounter these fallopian tube or reproductive diseases, they can treat them rationally and reduce the impact on our reproductive health as much as possible.