- Female reproductive system (human)
The female reproductive system contains two main parts: the
uterus, which act as the receptacle for the male's sperm, and the ovaries, which produce the female's egg cells. These parts are internal; the vagina meets the external organs at the vulva, which includes the labia, clitorisand urethra. The vaginais attached to the uterusthrough the cervix, while the uterusis attached to the ovaries via the Fallopian tubes. At certain intervals, the ovaries release an ovum, which passes through the Fallopian tubeinto the uterus.
If, in this transit, it meets with
sperm, the spermpenetrate and merge with the egg, fertilizing it. The fertilizationusually occurs in the oviducts, but can happen in the uterusitself. The zygotethen implants itself in the wall of the uterus, where it begins the processes of embryogenesisand morphogenesis. When developed enough to survive outside the womb, the cervixdilates and contractions of the uteruspropel the fetusthrough the birth canal, which is the vagina.
ovaare larger than spermand are generally all created by birth. Approximately every month, a process of oogenesismatures one ovum to be sent down the Fallopian tubeattached to its ovaryin anticipation of fertilization. If not fertilized, this egg is flushed out of the system through menstruation.
vaginais a fibromuscular tubular tract leading from the uterusto the exterior of the body in female mammals, or to the cloacain female birds and some reptiles. Female insects and other invertebrates also have a vagina, which is the terminal part of the oviduct.
vaginais the place where semenfrom the male is deposited into the female's body at the climax of sexual intercourse, commonly known as ejaculation.
cervixis the lower, narrow portion of the uteruswhere it joins with the top end of the vagina. It is cylindricalor conical in shape and protrudes through the upper anterior vaginal wall. Approximately half its length is visible; the remainder lies above the vagina beyond view.
uterusor wombis the major female reproductive organ of humans. One end, the cervix, opens into the vagina; the other is connected on both sides to the fallopian tubes.
uterusis a pear-shaped muscular organ. Its major function is to accept a fertilized ovumwhich becomes implanted into the endometrium, and derives nourishment from blood vessels which develop exclusively for this purpose. The fertilized ovum becomes an embryo, develops into a fetusand gestates until childbirth. If the egg does not embed in the wall of the uterus, a woman gets her period and the egg is flushed away.
Fallopian tubes or oviducts are two very fine tubes leading from the ovariesof female mammals into the uterus.
On maturity of an ovum, the follicle and the
ovary's wall rupture, allowing the ovum to escape and enter the Fallopian tube. There it travels toward the uterus, pushed along by movements of ciliaon the inner lining of the tubes. This trip takes hours or days. If the ovum is fertilized while in the Fallopian tube, then it normally implants in the endometriumwhen it reaches the uterus, which signals the beginning of pregnancy.
The ovaries are the place inside the female body where ova or eggs are produced. The process by which the ovum is released is called
ovulation. The speed of ovulation is periodic and impacts directly to the length of a menstrual cycle.
After ovulation, the ovum is captured by the
oviduct, after traveling down the oviductto the uterus, occasionally being fertilizedon its way by an incoming sperm, leading to pregnancyand the eventual birth of a new human being.
Fallopian tubesare often called the oviductsand they have small hairs ( cilia) to help the egg cell travel.
Male reproductive system
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