<prompt> The length of the fallopian tube is:8 - 10 cm10 - 12 cm15 - 18 cm18 - 20 cm  <response>: Important Facts about Fallopian Tube:Length 4 inches or 10-12 cm.Parts are :Interstitium Intramural: 1.8 cm long and 1 mm diameter narrowest partQ. It has no longitudinal muscles, only circular muscles are present.QIsthmus: 3.5 cm long and 2 mm in diameter.Q Second narrowest partQ.Ampulla: widestQ and longest partQ 6-7.5 cm and fertilization occurs hereQFimbriainfundibulumQHistologically:Fallopian tubes have unique type of cells called as Peg cellsQ whose function is not known.Q 