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प्रश्न
Answer the following question.
What is capacitation? Give its importance.
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उत्तर
Capacitation generally requires 5-6 hours during which the acrosome membrane becomes thin, Ca++ enters the sperm, and sperm tails begin to show rapid whiplash movements.
As a result of capacitation, sperms become extra active and begin to start moving upwards from the vagina to the uterus and to the oviducts. Prostaglandins activate the sperms. The vestibular secretions of the female also enhance sperm's motility. The sperms swim at an average speed of 1.5 to 3.0 mm/min and reach the ampulla. The contraction of uterus and fallopian tubes stimulated by oxytocin of females also aids in the movement of sperm. After capacitation the sperms may reach the ampulla within 5 minutes.
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संबंधित प्रश्न
Define the term Gamete.
Name the following:
The fully developed part of the ovary containing a mature egg.
Name the following:
The accessory gland in human males whose secretion activates the sperms
Rewrite the correct statement by changing the last one word if these statement is false.
Pregnancy in women can be prevented by the method of vasectomy.
What are the functions of testes?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Vas deferens transports sperms into the urethra.
What would be the effect if meiosis did not occur in nature?
The enzyme involved in penetration of sperm into ovum is ______.
Sperms undergo the following changes in the epididymis EXCEPT ______
Name the three main regions of the human sperm, and briefly mention the function of each.
