Fertilization
Fertilization is process of fusion of spermatozoon with mature ovum.
Final product (output) formed single celled zygote (mononucleated), contain diploid cell.
Objectives of Fertilization
1. To initiate embryonic development of egg.
2. Diploid organism by fusion of haploid male and female gametes.
3. Initiate embryogenesis (formation and development of embryo).
Fertilization occurs in ampullary part of uterine tube.
Immediately following ovulation, ovum picked up by tubal fimbriae.
Ovum picked up ciliary action/ muscular contraction.
Ovum transported to ampullary part.
Fertilization life span of Oocyte; 12 to 24 hours
Fertilization life span of Sperm; 48 to 72 hours
Millions of sperms deposited in vagina at single ejaculation.
Only thousand capacitated spermatozoa enter the uterine tube.
Only 350- 500 reach ovum.
Mucus membrane lining fallopian tube secretions help to transport sperm and egg and to keep them alive.
