FACTOID # 21: 15% of Army recruits from South Dakota are Native American, which is roughly the same percentage for female Army recruits in the state.
 
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Encyclopedia > Female reproductive system (human)
The human female's reproductive system.

The human female reproductive system contains two main parts: the vagina and uterus, which act as the receptacle for the male's sperm, and the ovaries, which produce the female's ova. All of these parts are always internal; the vagina (pussy) meets the outside at the vulva, which also includes the labia, clitoris and urethra. The vagina is attached to the uterus through the cervix, while the uterus is attached to the ovaries via the Fallopian tubes. At certain intervals, the ovaries release an ovum, which passes through the fallopian tube into the uterus. Image File history File linksMetadata No higher resolution available. ... Image File history File linksMetadata No higher resolution available. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... This article is about female reproductive anatomy. ... // For ovary as part of plants see ovary (plants) An ovary is an egg-producing reproductive organ found in female organisms. ... The external genital organs of the female are collectively known as the vulva (plural vulvae or vulvas)[1]. In common speech, the term vagina is often used improperly to refer to the vulva or female genitals generally, even though, strictly speaking, the vagina is a specific internal structure, whereas the... Parts of a vulva The external genital organs of the female are collectively known as the vulva (also sometimes called the pudenda). ... The clitoris (Greek ) is a sexual organ that is present in biologically female mammals. ... In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. ... The cervix (from Latin neck) is the lower, narrow portion of the uterus where it joins with the top end of the vagina. ... Female internal reproductive anatomy The Fallopian tubes or oviducts are two very fine tubes leading from the ovaries of female mammals into the uterus. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ...


If, in this transit, it 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. The zygote then implants itself in the wall of the uterus, where it begins the processes of embryogenesis and morphogenesis. 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 (pussy). A sperm cell fertilizing an ovum This article is about reproduction in organisms. ... Embryogenesis is the process by which the embryo is formed and develops. ... Morphogenesis (from the Greek morphê shape and genesis creation) is one of three fundamental aspects of developmental biology along with the control of cell growth and cellular differentiation. ...


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. Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). ... Menstrual cycle. ...

Contents

Vagina

Main article: Vagina

The vagina is the tubular tract leading from the uterus to the exterior of the body in female mammals, or to the cloaca in female birds and some reptiles. Female insects and other invertebrates also have a vagina, which is the terminal part of the oviduct. The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... This article is about female reproductive anatomy. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including those that produce milk, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... In zoological anatomy, a cloaca is the posterior opening that serves as the only such opening for the intestinal, urinary, and genital tracts of certain animal species. ... For other uses, see Bird (disambiguation). ... Reptilia redirects here. ... Orders Subclass Apterygota Archaeognatha (bristletails) Thysanura (silverfish) Subclass Pterygota Infraclass Paleoptera (Probably paraphyletic) Ephemeroptera (mayflies) Odonata (dragonflies and damselflies) Infraclass Neoptera Superorder Exopterygota Grylloblattodea (ice-crawlers) Mantophasmatodea (gladiators) Plecoptera (stoneflies) Embioptera (webspinners) Zoraptera (angel insects) Dermaptera (earwigs) Orthoptera (grasshoppers, etc) Phasmatodea (stick insects) Blattodea (cockroaches) Isoptera (termites) Mantodea (mantids) Psocoptera... Invertebrate is an English word that describes any animal without a spinal column. ... In oviparous animals (those that lay eggs), the passage from the ovaries to the outside of the body is known as the oviduct. ...


The vagina is the place where semen from the man is deposited into the woman's body during sexual intercourse. Horse semen being collected for breeding purposes. ... It has been suggested that Duration of sexual intercourse be merged into this article or section. ...


Cervix

Main article: Cervix

The cervix is the lower, narrow portion of the uterus where it joins with the top end of the vagina. It is cylindrical or 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. The cervix (from Latin neck) is the lower, narrow portion of the uterus where it joins with the top end of the vagina. ... This article is about female reproductive anatomy. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... The word cylinder has several meanings. ... This article is about the geometric object, for other uses see Cone. ...


Uterus

Main article: Uterus

The uterus or womb is 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. This article is about female reproductive anatomy. ... Åž:For other uses, see Organ (disambiguation) In biology, an organ (Latin: organum, instrument, tool) is a group of tissues that perform a specific function or group of functions. ... This article is about modern humans. ... The cervix (from Latin neck) is the lower, narrow portion of the uterus where it joins with the top end of the vagina. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... Female internal reproductive anatomy The Fallopian tubes or oviducts are two very fine tubes leading from the ovaries of female mammals into the uterus. ...

A pictorial illustration of the female reproductive system.

The uterus mostly consists of muscle, known as myometrium. Its major function is to accept a fertilized ovum which 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 fetus and gestates until childbirth. Image File history File links This is a lossless scalable vector image. ... Image File history File links This is a lossless scalable vector image. ... A top-down view of skeletal muscle Muscle (from Latin musculus little mouse [1]) is contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ... For other uses, see Embryo (disambiguation). ... “Unborn child” redirects here. ... Parturition redirects here. ...


Oviducts

Main article: Fallopian tube

The Fallopian tubes or oviducts are two very fine tubes leading from the ovaries of female mammals into the uterus. The Fallopian tubes, also known as oviducts, uterine tubes, and salpinges (singular salpinx) are two very fine tubes leading from the ovaries of female mammals into the uterus. ... Human female internal reproductive anatomy Ovaries are a part of a female organism that produces eggs. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including those that produce milk, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... This article is about female reproductive anatomy. ...


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 cilia on 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 endometrium when it reaches the uterus, which signals the beginning of pregnancy. cross-section of two cilia, showing 9+2 structure A cilium (plural cilia) is a fine projection from a eukaryotic cell that constantly beats in one direction. ... A sperm cell fertilizing an ovum This article is about reproduction in organisms. ... The endometrium is the inner membrane of the mammalian uterus. ... This article is about human pregnancy in biological females. ...


Ovaries

Main article: Ovary

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. // For ovary as part of plants see ovary (plants) An ovary is an egg-producing reproductive organ found in female organisms. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ... In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum. ... Ovulation is the process in the menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or casually, an egg) that participates in reproduction. ... Periodicity is the quality of occurring at regular intervals (e. ... Menstrual cycle The menstrual cycle is a recurring cycle of physiological changes that occurs in the females of several mammals, including human beings and apes. ...


After ovulation, the ovum is captured by the oviduct, where it travelled down the oviduct to the uterus, occasionally being fertilised on its way by an incoming sperm, leading to pregnancy. In oviparous animals (those that lay eggs), the passage from the ovaries to the outside of the body is known as the oviduct. ... Categories: Biology stubs ... A spermatozoon or spermatozoan ( spermatozoa), from the ancient Greek σπέρμα (seed) and (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. ... This article is about human pregnancy in biological females. ...


The Fallopian tubes are often called the oviducts and they have small hairs (cilia) to help the egg cell travel. cross-section of two cilia, showing 9+2 structure A cilium (plural cilia) is a fine projection from a eukaryotic cell that constantly beats in one direction. ...


External Links

  • OBGYN.net - Obstetrics, Gynaecology, Infertility, Pregnancy, Birth, & Women's Health top online resource

  Results from FactBites:
 
reproductive system - HighBeam Encyclopedia (881 words)
In humans and other mammals the female reproductive system produces the female reproductive cells (the eggs, or ova) and contains an organ in which development of the fetus takes place; the male reproductive system produces the male reproductive cells, the sperm, and contains an organ that deposits the sperm within the female.
In the human female reproductive system, ova are produced in the ovaries, two small organs set in the pelvic cavity below and to either side of the navel.
In the male reproductive system sperm are produced in the seminiferous tubules of the testes, two organs contained in the scrotum, an external sac in the groin.
Female Reproductive System (2726 words)
The female needs a male to fertilize her egg, even though it is she who carries offspring through pregnancy and childbirth.
Humans, like other organisms, pass certain characteristics of themselves to the next generation through their genes, the special carriers of human traits.
A female's internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries.
  More results at FactBites »

 
 

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