What is the composition of semen?

Explanation

(i) Semen is a milky white fluid which contains sperms and the seminal plasma secreted from the seminal vesicles, prostate gland and bulbourethral glands.
(ii) The seminal plasma contains fructose sugar, ascorbic acid, prostaglandins and a coagulating enzyme called vesiculase which enhance sperm mobility. It also contains citrate, several enzymes and prostate specific antigens. It also provides nutrients and contains chemicals that protect and activate the sperms.
(iii) It acts as a transport medium for the sperms.