part of part of Homo sapiens fallopian tube subdivision of oviduct intramural segment of fallopian tube 2026-05-25T00:00:00Z Wikipedia:Fallopian_tube A subdivision of the fallopian tube that lies within the myometrium, the muscular wall of the uterus, connecting the isthmus to the uterine cavity. This is the narrowest and shortest segment of the fallopian tube, measuring approximately 0.7 mm in diameter and 1 cm in length.