This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tubal Pregnancy, Subject name: Gynaecology & Obstetrics
Most common site of fertilisation is: 
Select and explain. 
A. Interstitiuin, B. Isthumus, C. Ampulla, D. Infundibulum
C: Ampulla
Answer: C: Ampulla 
Explanation: Ans: C (Ampulla) Ref: Dutta: Textbook of Obstetrics 7th ed pg 21. 22Explanation:FERTILISATIONProcess of fusion of sperm with ovum forming zygote.Fertilisation occurs in the ampullary end of the tube.From ovulation to implantation* Complete dissolution of corona radiata occurs by chemical action of hyaluronidase liberated from acrosomal cap of hundreds of sperm present at the site.