Fallopian tube
The Fallopian tube is composed of four parts. These are, described from near the ovaries to inwards near the uterus, the "infundibulum" with its associated "fimbriae" near the ovary, the "ampulla" that represents the major portion of the lateral tube, the "isthmus", which is the narrower part of the tube that links to the uterus, and the interstitial (or intramural) part, the narrowest part of the uterine tube, that crosses the muscles of the uterine. The average length of a fallopian tube is 11-12 cm.