This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Under normal conditions, feilization occurs in which pa of the female reproductive tract? 
Select and explain. 
A. Infundibulum of the Uterine Tube, B. Ampulla of the Uterine Tube, C. Isthmus of the Uterine Tube, D. Uterine Lumen
B: Ampulla of the Uterine Tube
Answer: B: Ampulla of the Uterine Tube 
Explanation: Feilization normally takes place in the ampulla of the uterine tube. This is the middle segment of the uterine tube, and it is the longest and widest segment. The infundibulum is the funnel-shaped distal end of the uterine tube, and the isthmus is the narrowest pa of the uterine tube which connects directly to the uterus. The uterine lumen is the site of implantation, not feilization. Ref:Cunningham F.G., Leveno K.J., Bloom S.L., Hauth J.C., Rouse D.J., Spong C.Y. (2010). Chapter 5. Maternal Physiology. In F.G. Cunningham, K.J. Leveno, S.L. Bloom, J.C. Hauth, D.J. Rouse, C.Y. Spong (Eds), Williams Obstetrics, 23e.