The fusion of the egg and sperm is a lot referred to as institution. This results in a fertilized egg which develops into a foetus. A foetus is developed two months after contraception. During the nine months which the foetus is developing is called pregnancy and it ends with giving birth to a baby. (Howard-Barr & Barrineau, 2005).
fertilization
each month the womens female reproductive system releases an egg from an ovary. This exhibit is called ovulation in which the released egg travels by means of the fallopian tube. The egg is alive and able to be fertilized within 12- 48 hours of its release. If the egg does not puzzle fertilized then it is expelled from the proboscis during menstruation. Menstruation refers to the monthly loss of agate line and tissue lining of the uterus. (Howard-Barr & Barrineau, 2005).
During sexual intercourse sperm is releases into the womens vagina and maybe viable between 48 hours to five mean solar days. Fertilization is most likely to occur if sexual intercourse takes come in within five days prior and one day after ovulation. The sperm is required to swim past the cervix, with the uterus and into the fallopian tubes. While a number of sperms may deform the egg, only one is able to enter.
When the sperm is successful in entering the egg the two form a fertilized ovum which is a single cell which a child develops. The zygote has to travel through the fallopian tube and during days four or five it reaches its destination and enters the uterus where it implants itself in the lining of the uterus and becomes a blastocyst. The blastocyst grows into an conceptus which develops through weeks two through to week eight and at week eight the embryo is called a fetus. (Howard-Barr & Barrineau, 2005).
Pregnancy trimesters
The first trimester is the stage of pregnancy which takes places from conception to week twelve. This trimester usually brings out the early symptoms of pregnancy were the body is required to adjust to the hormonal changes....If you want to get a full essay, order it on our website: Ordercustompaper.com
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