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What is Sperm remains in epididymis for ____ hours? and explain in detail?
Ans. A 24Ref: Guyton, 13th ed. pg. 1023The sperms acquire motility in epididymis and remain there for 18-24 hours. It involves activation of unique set of proteins called CatSper. CatSper forms an alkaline sensitive calcium channel that becomes more active as the sperms go to acidic vagina. The capacitation occurs in female genital tract.