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There are two Fallopian tubes, attached to either side of the cranial end of the uterus, and each terminating at or near one ovary.

When an ovum is developing in an ovary, it is encapsulated in a sac known as a ovarian follicle. On maturity of the ovum, the follicle and the ovary's wall rupture, allowing the ovum to escape and enter the Fallopian tube. There it travels toward the uterus, pushed along by movements of cilia on the inner lining of the tubes. This trip takes hours or days. If the ovum is fertilized while in the Fallopian tube, then it normally implants in the endometrium when it reaches the uterus, which signals the beginning of pregnancy. Occasionally the embryo implants into the Fallopian tube instead of the uterus, creating an ectopic pregnancy.

The Fallopian tubes are not homologous to the vas deferensThe vas deferens also called ductus deferens ( Latin: "carrying-away vessel") is part of the human male anatomy. There are two of them; they are muscular tubes (surrounded by smooth muscle) connecting the left and right epididymis to the ejaculatory ducts or any other structure in males. Embryotadpole) of the wrinkled frog Rana rugosa . An embryo is an animal or a plant in its earliest stage of development. Plants In botany, a plant embryo is part of a seed, consisting of precursor tissues for the leaves, stem (see hypocotyl , and root (see rads have two pairs of ducts to let gameteGametes also known as sex cells, germ cells, or spores—are the specialized cells that come together during fertilization (conception) in organisms that reproduce sexually. In those species that produce two morphologically distinct types of gametes, and ins out of the body; one pair develops in females into the Fallopian tubes, uterus and vagina, while the other pair develops in males into the epididymisThe epididymis is part of the human male reproductive system and is present in all mammals. It is a narrow, tightly-coiled tube connecting the rear of each testicle to its vas deferens. The epididymis can be divided into three main regions, the head caput and vas deferens. Normally, only one of the pair of tubes will develop while the other regresses and disappears in utero.

The Fallopian tubes are not directly attached to the ovaries, but open into the peritonial cavityIn higher vertebrates, the peritoneum is the membrane that forms the lining of the abdominal cavity it covers most of the intra-abdominal organs. The corresponding tissues in the pleural and pericardial cavities of the thorax are called the pleura and the (essentially the inside of the abdomen); they thus form a direct communication between the peritoneal cavity and the outside via the vagina.

In humanHuman beings are defined variously in biological, spiritual, and cultural terms, or in combinations thereof. Biologically, they are classified as Homo sapiens ( Latin for knowing man , a primate species of mammal with a highly developed brain. In spirituas, the Fallopian tubes are about 7–14 cm long.