The fallopian tubes and uterus have a common embryologic origin, so it is not surprising that they have a similar anatomic organization. During fetal life, the layers of the wall of the fallopian tubes mature and differentiate in a similar fashion to the uterus. During the second and third trimesters, the fallopian tubes typically exhibit a markedly convoluted gross appearance. As in adults, the fetal fallopian tube can be divided into four segments: the intramural segment within the wall of the uterine cornu; the adjacent isthmus, with a thick, stout wall and a narrow lumen; the ampulla, which is thin-walled and tortuous; and the infundibulum, which opens into the peritoneal cavity by way of the fimbriated end. This chapter reviews the histologic features of the fallopian tube segments during fetal life.
KeywordsFallopian tube Fetal histology Paramesonephric duct
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