Question

Choose the incorrect statement with respect to the process of capacitation.

• A. It occurs so that spermatozoa becomes motile and fully functional.
• B. It takes place in the female reproductive tract.
• C. Spermatozoa become motile when they are mixed with secretions of the seminiferous tubules
• D. Sperms become capable of successful fertilisation when exposed to conditions in the female reproductive tract

Answer 1

The correct option is C Spermatozoa become motile when they are mixed with secretions of the seminiferous tubules

Capacitation is the process of physiological changes that occur in the spermatozoa (sperm cells) in order to have the ability to penetrate and fertilise the egg. It refers to activation of the sperm on coming in contact with the fluids of the female genital tract.
The uterine and fallopian tube secretions nullify the inhibitory factors that suppress the sperm activity. The sperm takes in more calcium and the activity of flagellum is also increased.
The sperms removed from the seminiferous tubules and from the early portions of epididymis are non-motile.