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after the sperm enters the egg the egg undergoes certain changes in its outer layers preventing any more sperm from entering

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Q: How entry of additional sperms is blocked into an ovum?
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Can sperms fertilize the ovum when the ovum is dead?

No it can not.


Why only one sperm cell can fertilized an ovum?

Ovum has a layer of zona pellucida around itself. When a sperm enters the ovum, the cortical granules present in the ovum, causes the thickening of the zona pellucida. This prevents the entry of other sperms in the ovum and only one sperm is able to fertilize the egg.


Which is that sperm that fertilize the ovum?

The luckiest of all sperms makes it alive and fuses with the ovum.


In what way is an ovum adapted to carry out its special role?

The ovum is bound by many membranes preventing the breakage of it. The ovum contains food which is essential for the developing zygote. It forms a fertilization membrane after fertilization to prevent the entry of the other sperms.


Do female dischagre sperms?

On average Femaled discharge one ovum.


What is the function of hyaluronidase?

it is produced by sperms to help penetrate the ovum and fertilize it


How does ovum prevent multiple penetrations of sperm cells along its periphery?

as soon as a single sperm fertilises the ovum a change of composition takes place in ovum's outer layer forming zona pellucida which prevents the penetration of other sperms.


How many million sperms compete to reach ovum?

Average is 111 million. Most never reach the egg.


How do you Pregnancy?

There are few prerequisite for the pregnancy to take place. You should be a female. You should belong to the age group of menarche to menopause. Then you need to have sexual contact with the fertile male. At times the semen is accidentally or artificially put into the vagina and you become pregnant. The sperms travel to the fallopian tube to meet the ovum. many sperms try to penetrate the ovum. One gets in to fertilize the ovum. This fertilized ovum embed itself into the uterine wall to give you pregnancy.


How does the ovum prevent multiple penetrations of sperm cells along it's periphery?

as soon as a single sperm fertilises the ovum a change of composition takes place in ovum's outer layer forming zona pellucida which prevents the penetration of other sperms.


What happens to the other sperm?

when one sperm penetrates the membrane of an ovum. it will tickens and secrete an enzyms that digest other sperms


Why do you have to stick a man's pee-pee in your body to fertilize yourself for having a baby?

Then the male can transfer sperms to your body through ejaculation. And one of these sperms will meet an ovum in your body, fertilize it and become a baby.