Explain the process of reproduction in human beings.
Asked by | 4th Feb, 2009, 12:53: PM
Sexual reproduction takes place in humans.
The human male reproductive system is a series of organs located outside of the body and around the pelvic region of a male that contribute towards the reproductive process. The male contributes to reproduction by producing spermatozoa. The process of spermatogenesis takes place in testes.
The female reproductive system consists of vagina, cervix, uterus, oviducts and ovaries.
At certain intervals, the ovaries release an ovum, which passes through the Fallopian tube into the uterus.
The ova are larger than sperm and are generally all created by birth. Approximately every month, a process of oogenesis matures one ovum to be sent down the Fallopian tube attached to its ovary in anticipation of fertilization. If not fertilized, this egg is flushed out of the system through menstruation.
If the ova meets with sperm, the sperm penetrate and merge with the egg, fertilizing it. The fertilization usually occurs in the oviducts, but can happen in the uterus itself. . When developed enough to survive outside the womb, the cervix dilates and contractions of the uterus propel the fetus through the birth canal, which is the vagina
Human reproduction takes place as internal fertilization by sexual intercourse. During copulation, the sperms are introduced into the female's vagina. The sperm then travels through the vagina and cervix into the uterus or fallopian tubes for fertilization of the ovum. Upon successful fertilization, the zygote then implants itself in the wall of the uterus, where it begins the processes of embryogenesis and morphogenesis. Thus gestation of the foetus occurs within the female's uterus, called pregnancy. There is a period of nine months of pregnancy before childbirth.
Answered by | 5th Feb, 2009, 07:11: PM
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