Sperm fertile egg

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As you approach ovulation, your suddenly copious mucus becomes stretchy, clear and thin that's one of the reasons why observing it is such an effective method of determining your ovulation time. Fertilization — sperm union with the egg — occurs in this portion of the tube. As soon as one lucky sperm cell succeeds in penetrating the egg, the egg immediately undergoes a chemical reaction that prevents other sperm cells from penetrating as well. The successful fusion of gametes forms a new organism. He has fathered five children since then, three from banked sperm, but two, he says, were concieved naturally. Not so with in-vitro test tube fertilization. Each one measures about 0.

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Egg transport begins at ovulation and ends once the egg reaches the uterus.

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Sperm Meets Egg: Weeks 1 to 3 of Pregnancy

But just like an assembly line, it takes time to go from the start to the end. Even though an egg can only be fertilized within 24 hours of being released, sperm can live inside the body for up to five days. This triggers the acrosome reaction, in which the enzymes of the acrosome are freed. This information is for educational purposes only and is not intended to replace the advice of your doctor or health care provider. These changes make the mucus a great transport medium for the sperm, and help the sperm continue traveling.

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