Sunday, February 21, 2010

Fertilization

During sexual intercourse, spermatozoa are deposited at the month of the uterus. Through strong harmonic attraction, they are down into fallopian tube through uterus. These sperms actively swim with the help to their tail and pass through the cervix into uterus progressing of the rate of approximately 1.5mm per minute. F 21 rom the uterus, they climb up to reach the oviducts.

As a result of ovulation, the ovum as released in the abdominal cavity. the cilia of fallopian tube produce a current by which ovum enters a oviduct funnel. It travels down the Fallopian tube. If there happens to be a spermatozoa in the oviduct, fertilized ovum units with a sperm. The fusion of sperm uncleus with age uncleus is called fertilization and zygote is formed.

A single ejaculation by the human male is about 2-6 ml and contains about four hundred million sperms. Out of the million of sperms released in the vaging, very few are able to climb up to the upper parts of oviducts, the rest die on the way and are absorbed.

Conception takes place when the sperms from the male meets and units with the egg of the female. Gradually, the egg fertilized by the sperm from a foetus which is the tiny beginning of the baby, and it continuous to grow 9 months.

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