from PART II - INFERTILITY EVALUATION AND TREATMENT
Published online by Cambridge University Press: 04 August 2010
ANATOMY OF THE FALLOPIAN TUBE
The fallopian tube develops as part of the paramesonephric ducts. These ducts develop as invaginations of the celomic epithelium around the four to six weeks of embryonic life after fertilization. The proximal portion of the paramesonephric ducts will lead to the development of the fallopian tubes. The distal portions will lead to the development of the uterus, cervix, and upper part of the vagina (1).
The human fallopian tube varies in length between 7 and 14 cm, with an average of 10 cm. It has various segments that vary in length and lumen diameter. The interstitial portion of the fallopian tube is contained within the cornual portion of the uterus, and it is about 1 cm in length. This will lead to the isthmic portion of the fallopian tube, which is about 2–3 cm in length and a lumen about 1 mm in diameter. The isthmus then is connected to the ampulla of the fallopian tube, which is the longest portion of the tube about 5–7 cm. The lumen is about 1–2 mm in diameter. This will lead after that to the infundibulum, which is about 3 cm wide and leads to the fimbrial end of the fallopian tube. The fimbria embrace the ovary, and this is assisted with the longest fimbria known as fimbriaovarica especially around the time of ovulation, and this process is important in the ovum pickup phenomena (2–4).
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