Zoology - Human Reproduction Question with Solution | TestHub

After ejaculation, within 15 minutes, the semen coagulates. The calcium and fibrinogen helps in seminal clotting and ​forms globules. Thus helps to keep the ejaculated sperm in the female reproductive tract. After about some 30-40 minutes, prostate-specific antigen present in the semen causes the de coagulation of the semen. The initial clotting keeps the semen active in the acidic environment of the vagina, while de coagulation/liquefaction frees the sperm to make their journey to the ova.