Sabtu, 05 Desember 2009

HUMAN REPRODUCTION

Reproduction is the biological process that produce new individual organisms. Human reproduction can do if there are male reproduction and female reproduction.

The male genital system consists of penis, testis and scrotum. A male usually have two testis that full of tubule somniferous. Testis is sperms maker, sperm save in epididimis. epididimis is coil channel behind the testis. Another tube named Vasdeferen connecting all epididimis to ejaculation channel that also connected to urethra. Two vesicles seminal and a prostate secrete liquid for bring an spray the sperm.

The female genital system consist of ovarian, fallopian tube, uterus, and vagina that’s all are in the beneath the stomach. Ovarian contain follicle that save the ovum, ovum is cell that can merge with sperm from male become zygote. Every month an ovum became mature and release from ovarian from ovarian. If not fertilized, this egg is flushed out of the system through menstruation.

During sexual contact sperms spray in the vagina and swimming into fallopian tube if sperm will try to penetrate the stratum. If sperm success will realize the tail and melt with nucleus of ovum, it mean egg fertilized. Whereas the chemical change in the ovum that can prevent another sperm come inside. And than shaped a new cell called zygote. Than zygote move into uterus trough fallopian tube and split many time shaped morula. When morula get in the uterus than enter to endometrium while direct bloom. Since that pregnancy already go on. Gestation is 40 weeks in human, after nine months is continued with birth process.

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