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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.
Differentiate between the following pair:
Efferent duct and sperm duct
Choose the correct answer:
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Give Reasons
The acrosome of sperm secretes an enzyme called hyaluronidase at the time of fertilization
Explain the term Cowper’s glands.
Multiple choice question.
In human female, the fertilized egg gets implanted in uterus _______.
Define.
Fertilization
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