In human, fertilization usually occurs in the: (A) Fimbriated end of uterine tube, (B) Ampulla of the uterine tube, (C) Isthmus of the uterine tube, (D) Uterine cavity
Answer is B. B. i.e. (Ampulla of the uterine tube) (448 - Ganong) (423 - Ganong 23rd)* In humans Fertilization of the ovum by the sperm usually occurs in the ampulla of uterine tube** lined by ciliated columnar epithelium ** (AI - 09), occurs within few hours* Among 200- 300 million of sperms entering female genital tract only few thousand sperms reach the spot near the ovum and only one sperm fertilizes the ovum*** Implantation of the fertilized ovum occurs between 5-7 days after fertilization**.* Spermatogeneis occurs at temperature lower than core body temperature (AI- 09)