1, the main role of the fallopian tube in the process of pregnancy? The main roles of the fallopian tube in pregnancy are sperm transport, egg uptake, provision of fertilization site and sending the fertilized egg to the uterine cavity. Sperm enters the fallopian tube through the uterine cavity, while the egg also enters the fallopian tube, and the two combine to form an embryo, which then passes through the fallopian tube to the uterine cavity, where it is implanted and becomes pregnant. 2.What do the fallopian tubes look like? Where are they? The fallopian tube is located between the uterus and ovary, with a total length of 6-375px, divided into the mesenchymal part, isthmus, jugular abdomen and umbrella end, which is mainly an important place to transport sperms, eggs and provide the combination of the two, so once the fallopian tube has a problem, it will cause infertility in women. 3.Infertility caused by tubal factor accounts for the proportion of female infertility? Our current data show that the infertility caused by fallopian tube factor accounts for about 40%. 4.Can I still get pregnant after tubal removal? The fallopian tube is an essential organ for women to get pregnant, it is an important place for sperm and egg to combine, if one side of the fallopian tube has to be removed for some reasons, as long as the other side is normal, there is also a chance to get pregnant, but the rate of pregnancy is reduced, and even if you get pregnant, the risk of ectopic pregnancy is higher than that of normal people. 5, the cause of tubal disease? Tubal disease is mostly secondary to infection, including pelvic inflammatory diseases, appendicitis, post-abortion infection, pelvic tuberculosis, etc., and some patients have pelvic or abdominal surgery history, all of which can cause local thickening of the fallopian tube, adhesion, ultimately leading to partial occlusion of the fallopian tube or complete occlusion; there are also a few patients with congenital tubal deformities resulting in sperm and egg can not be normal combination caused by infertility. 6.Why are the fallopian tubes so fragile? The fallopian tube is a very thin hose, the narrowest place is about 5mm, so once subjected to inflammation or other injuries, it is very easy to block, its distal end that is the umbrella end of the opening of the abdominal cavity, is responsible for picking up the eggs, and the surrounding and a number of tissues adjacent to the umbilical end of the tubes, these tissues, if there is a problem, the tubal umbilical end will be affected. 7.Common examination methods to evaluate the function of fallopian tube? The examination methods of fallopian tube are fluid passage, imaging and laparoscopy. Among them, hysterosalpingography is the most commonly used test to find out whether the tubes are patent and the degree of patency and the specific site of obstruction. It is usually performed within 3-7 days after menstrual cleansing without acute inflammation of the reproductive system. Whether it is the obstruction or poor peristalsis of the oviducts caused by inflammation, tuberculosis or endometriosis, congenital tubal defects or ectopic pregnancies that lead to oophorectomy, all of them make it impossible for the sperm and eggs to meet, and in vitro fertilization (IVF) technology builds a bridge for these patients, so that it can be said that infertility due to tubal problems is an absolute indication for “IVF”. It can be said that infertility due to tubal problems is an absolute indication for IVF.