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Encyclopedia > Ovaries
From Image:Fem_isa.gif without English text, for international use Original corrected for correct G-spot location source: http://www.clitoris-information.com/clitoris.html See: Talk:G-spot. See also File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old...
From Image:Fem_isa.gif without English text, for international use Original corrected for correct G-spot location source: http://www.clitoris-information.com/clitoris.html See: Talk:G-spot. See also File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old... Enlarge
Human female internal reproductive anatomy

Ovaries are a part of a Female is a sex that denotes an animal which produces egg cells in order to reproduce. (The egg cell is the larger gamete). Female or Feminine is a grammatical gender in many languages. The female is one half of a heterogamous reproduction system, where the male is the other half... female organism that produces A human ovum An ovum (also oocyte, ovocyte, or loosely, egg or egg cell) is a female sex cell or gamete. Both animals and seed plants have ova. The term ovule is used for the ovum of seed plants and for the young ovum of an animal. The word is... eggs.


Mammalian ovaries

Ovaries are part of the Typical classes Petromyzontidae (lampreys) Placodermi - extinct Chondrichthyes (cartilaginous fish) Acanthodii - extinct Actinopterygii (ray-finned fish) Actinistia (coelacanths) Dipnoi (lungfish) Amphibia (amphibians) Reptilia (reptiles) Aves (birds) Mammalia (mammals) Vertebrata is a subphylum of chordates, specifically, those with backbones or spinal columns. The bones of the spinal column (or vertebral column) are... vertebrate female A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: Male: penis (notably the glans penis... reproductive system. Normally, a female will have two ovaries, each performing two major functions: producing A human ovum An ovum (also oocyte, ovocyte, or loosely, egg or egg cell) is a female sex cell or gamete. Both animals and seed plants have ova. The term ovule is used for the ovum of seed plants and for the young ovum of an animal. The word is... eggs and secreting Hormone is also the NATO reporting name for the Soviet/Russian Kamov Ka-25 military helicopter. A hormone (from Greek horman - to set in motion) is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms (including plants) produce hormones. The best known hormones are... hormones. Ovaries in females are Two or more structures are said to be homologous if they are alike because of shared ancestry. This could be evolutionary ancestry, meaning that the structures evolved from some structure in a common ancestor (the wings of bats and the arms of humans are homologous in this sense) or developmental... homologous to Human male anatomy The testicles, known medically as testes (singular testis), are the male generative glands in animals. Male mammals have two testicles, contained within an extension of the abdomen called the scrotum. Function Like the ovaries (to which they are homologous), testicles are components of both the reproductive system... testes in males. Most For other meanings of bird, see bird (disambiguation). Orders Many - see section below. Birds are bipedal, warm-blooded, egg-laying vertebrates characterized primarily by feathers, forelimbs modified as wings, and hollow bones. Birds range in size from the tiny hummingbirds to the huge Ostrich and Emu. Depending on taxonomic viewpoint... birds have only one functioning ovary; Families Acrochordidae Aniliidae Anomalepididae Anomochilidae Atractaspididae Boidae Bolyeriidae Colubridae Cylindrophiidae Elapidae Hydrophiidae Leptotyphlopidae Loxocemidae Pythonidae Tropidophiidae Typhlopidae Uropeltidae Viperidae Xenopeltidae Snakes are cold blooded legless reptiles closely related to lizards, which share the order Squamata. There are also several species of legless lizard which superficially resemble snakes, but are not... snakes have two, one in front of the other.


As female mammals develop within the womb, each ovary develops a number of immature eggs associated with groups of other cells called follicles. While mammals were thought to develop their entire supply of eggs prenatally and soon after birth, new evidence from laboratory mice has called this into question, showing that female mice in fact produce new eggs throughout their reproductive lifetime. However, there is no direct evidence showing that human females produce new eggs after birth. As the animal (or person) becomes reproductively mature (the process called Puberty refers to the process of physical changes by which a childs body becomes an adult body capable of reproduction. Growth accelerates in the first half of puberty and reaches completion by the end. Body differences between boys and girls before puberty are almost entirely restricted to the genitalia... puberty in humans), eggs will periodically mature and be released from the ovary (a process called ovulation) so that they will be available for Categories: Biology stubs ... fertilization by Schematic diagram of a sperm cell, showing the (1) acrosome, (2) cell membrane, (3) nucleus, (4) mitochondria, and (5) flagellum (tail) A sperm cell, or spermatozoon (pl. spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. It is carried in fluid called... sperm. A fertilized egg resulting from union with a sperm becomes a A zygote (Greek: ζυγωτόν) is a cell that is the result of fertilization. That is, two haploid cells—usually (but not always) a sperm cell from a male and an ovum from a female—merge into a single diploid cell called the... zygote and then an Categories: Biology stubs | Developmental biology ... embryo as it develops.

Internal reproductive organs of human female
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Internal reproductive organs of human female

Animal and human ovaries also produce various A sex steroid is a steroid hormone which interacts with vertebrate androgen or estrogen receptors. Natural sex steroids are made by the gonads (ovaries or testes), by adrenal glands, or by conversion from other sex steroids in other tissues such as liver or fat. The term sex hormone nearly always... steroid and peptide Hormone is also the NATO reporting name for the Soviet/Russian Kamov Ka-25 military helicopter. A hormone (from Greek horman - to set in motion) is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms (including plants) produce hormones. The best known hormones are... hormones. Estrogens (or oestrogens) are a group of steroid compounds that function as the primary female sex hormone. They are produced primarily by developing follicles in the ovaries, the corpus luteum and the placenta. Some estrogens are also produced in smaller amounts by other tissues such as liver, adrenal glands and... Estrogen and Progesterone is a steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. Molecular diagram of progesterone Progesterone levels vary during the menstrual cycle and it is an ingredient of most birth control pills where it acts by arresting the cycle. Progesterone... progesterone are the most important of these in mammals. These hormones induce and maintain the physical changes of puberty and the Secondary sex characteristics are traits that distinguish the two sexes of a species, but that are not directly part of the reproductive system. Some have argued that in general they evolved to give an individual an advantage over its rivals in courtship. They are opposed to the primary sexual characteristics... secondary sex characteristics. They support maturation of the Female internal reproductive anatomy The uterus or womb is the major female reproductive organ of most mammals, including humans. One end called the cervix, opens into the vagina, and the wider end, called the body of uterus, is connected on both sides with the Fallopian tubes. It comes in a... uterine The endometrium is the uterine membrane in mammals which is thickened in preparation for fertilization, and into which a fertilized egg is implanted upon its arrival into the uterus. It is rich in blood vessels, which are soon connected to by the new embryo, forming a placenta through which the... endometrium in preparation of implantation of a fertilized egg. They provide signals to the hypothalamus and pituitary that help maintain the The menstrual cycle is the periodic change in a womans body that occurs every month between puberty and menopause and that relates to reproduction. The average human menstrual cycle, regulated by hormones, takes 28 days, but it can range from 21 to 35 days. Generalities Menstruation, commonly called a... menstrual cycle. Estrogen plays an important role in maintaining subcutaneous fat, bone strength, and some aspects of brain function.


In humans, an egg launched from an ovary has to traverse a slight space before entering the Female internal reproductive anatomy The Fallopian tubes or oviducts are two very fine tubes leading from the ovaries of female mammals into the uterus. They are named after their discoverer, the 16th century Italian anatomist, Gabriele Falloppio. There are two Fallopian tubes, attached to either side of the cranial end... fallopian tube and moving gradually down to the Female internal reproductive anatomy The uterus or womb is the major female reproductive organ of most mammals, including humans. One end called the cervix, opens into the vagina, and the wider end, called the body of uterus, is connected on both sides with the Fallopian tubes. It comes in a... uterus. If fertilized, it implants itself into the lining of the uterus and develops as the pregnancy continues. If the fertilized egg settles into the fallopian tube instead of the uterus an An ectopic pregnancy is one in which the fertilized ovum is implanted in any tissue other than the uterine wall. Most ectopic pregnancies occur in the Fallopian tube (so-called tubal pregnancies), but implantation can also occur in the cervix, ovaries, and abdomen. Overview In a normal pregnancy, the fertilized... ectopic pregnancy will result. If the egg fails to release from the follicle in the ovary an ovarian cyst may form. Small ovarian cysts are common in healthy women but large cysts can be an advanced manifestation of Polycystic ovary syndrome (PCOS, also known clinically as Stein-Leventhal syndrome), is an endocrine disorder that affects 5–10% of women. It occurs amongst all races and nationalities, is the most common hormonal disorder among women of reproductive age, and is a leading cause of infertility. The symptoms and... polycystic ovary syndrome.


See also: Oophorectomy is the surgical removal of the ovaries of a female animal. In the case of non-human animals, this is also called spaying. It is a form of sterilization. The removal of the ovaries together with the Fallopian tubes is called salpingo-oophorectomy. Oophorectomy and salpingo-oophorectomy are not... Oophorectomy, Polycystic ovary syndrome (PCOS, also known clinically as Stein-Leventhal syndrome), is an endocrine disorder that affects 5–10% of women. It occurs amongst all races and nationalities, is the most common hormonal disorder among women of reproductive age, and is a leading cause of infertility. The symptoms and... polycystic ovary syndrome, Turner syndrome is a human genetic abnormality, caused by a nondisjunction in the sex chromosomes that occur to females (1 out of every 2,500 births). Instead of the normal XX or XY sex chromosomes, only one X chromosome is present and fully functional. In Turner syndrome, female sexual characteristics... Turner syndrome, Hypogonadism is a medical term for a defect of the reproductive system which results in lack of function of the gonads (ovaries or testes). The gonads have two functions: to produce hormones (testosterone, estradiol, antimullerian hormone, progesterone, inhibin B), activin and to produce gametes (eggs or sperm). Deficiency of sex... hypogonadism, Menopause (also known as the Change of life or climacteric) is a stage of the human female reproductive cycle that occurs as the ovaries stop producing estrogen, causing the reproductive system to gradually shut down. As the body adapts to the changing levels of natural hormones, vasomotor symptoms such as... menopause, ovarian cancer.


Ovaries of plants


Longtitudinal section of female flower, courgette Image taken by me, released under GFDL Pollinator 05:37, 21 Mar 2004 (UTC) ( ) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. Click on date to download the file or see the...
Longtitudinal section of female flower, courgette Image taken by me, released under GFDL Pollinator 05:37, 21 Mar 2004 (UTC) ( ) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. Click on date to download the file or see the... Enlarge
Longitudinal section of female flower of squash showing ovary, ovules, pistil, and petals

An ovary is also the female part of a Wildflowers A flower is the reproductive organ of those plants classified as angiosperms (flowering plants; Division Magnoliophyta). The function of a flower is to produce seeds through sexual reproduction. For the higher plants, seeds are the next generation, and serve as the primary means by which individuals of a species... flower. It has a long Clothing, see Fashion Writing, see style guide Flower part, see Flower Style (manner of address) Chinese courtesy name, see zi Web design, see Cascading Style Sheets Sundials, see sundial See also: Wikipedia:Manual of Style This is a disambiguation page — a navigational aid which lists other pages that might... style and surrounds the ovule(s). After Pollination is an important step in the reproduction of seed plants: the transfer of pollen grains (male gametes) to the plant carpel, the structure that contains the ovule (female gamete). The receptive part of the carpel is called a stigma in the flowers of angiosperms and a micropyle in gymnosperms... pollination, the ovary will grow into the fruit, while the ovule(s) become the seed(s). Some wind pollinated flowers have much reduced and modified ovaries.



A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: Male: penis (notably the glans penis... Reproductive system
Female: Categories: Anatomy stubs | Reproductive system | Gynecology ... Cervix - A womans clitoris extends from the visible portion to a point below the pubic bone. The clitoris is a sexual organ in the body of female mammals. The visible knob-like portion is located near the anterior junction of the labia minora, above the opening of the vagina. Its... Clitoris - Female internal reproductive anatomy The Fallopian tubes or oviducts are two very fine tubes leading from the ovaries of female mammals into the uterus. They are named after their discoverer, the 16th century Italian anatomist, Gabriele Falloppio. There are two Fallopian tubes, attached to either side of the cranial end... Fallopian tubes - Bartholin's glands - The hymen (or maidenhead) is a membrane which completely or partially occludes the vaginal opening in human females. The term comes from a Greek word meaning membrane. Because sexual activity would usually puncture this membrane, its presence has been considered a guarantor of virginity in societies that place a high... Hymen - Mammary glands are milk-secreting adaptations of sweat glands and are the characteristic of mammals which gave the class its name. The basic components of the mammary gland are the alveoli lined with milk-secreting epithelial cells and surrounded by myoepithelial cells and a rich capillary network. These alveoli join... Mammary glands - Ovaries - Skene's glands - Male anatomy Female anatomy In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. The urethra has an excretory function in both sexes, to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm... Urethra - Female internal reproductive anatomy The uterus or womb is the major female reproductive organ of most mammals, including humans. One end called the cervix, opens into the vagina, and the wider end, called the body of uterus, is connected on both sides with the Fallopian tubes. It comes in a... Uterus - Human female internal reproductive anatomy The vagina (from the Latin for sheath or scabbard ) 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... Vagina
Male: Male Anatomy In the anatomy of the male human body, the bulbourethral glands (or Cowpers glands) are two small, rounded, and somewhat lobulated bodies, of a yellow color, about the size of peas, placed behind and lateral to the membranous portion of the urethra, between the two layers of... Bulbourethral glands - Cowper's glands - Male Anatomy The Ejaculatory ducts are part of the human male anatomy. Each male has two of them. They begin at the vas deferens, pass through the prostate, and empty into the urethra at the Colliculus seminalis. During ejaculation, semen passes through them. Categories: Reproductive system | Andrology ... Ejaculatory duct - Male Anatomy The epididymis is part of the human male reproductive system and is present in all mammals. It is a narrow, tightly-coiled tube connecting the efferent ducts from the rear of each testicle to its vas deferens. The epididymis can be divided into three main regions, the head... Epididymis - The penis (plural penises or penes) or phallus is the external male copulatory organ, and, in mammals, the external male organ of urination. It is homologous to the female clitoris, as it develops from the same embryonic structure. The penis is capable of erection for use in copulation. The human... Penis - Male Anatomy The prostate is a gland that is part of male mammalian sex organs. Its main function is to secrete and store a clear, slightly acidic fluid that is part of semen. The prostate differs considerably between species anatomically, chemically and physiologically. A healthy human prostate is approximately the... Prostate - The scrotum (human variant shown) is a thin extension of the abdomen that contains the testes and helps regulate their temperature. In male animals, the scrotum is an external bag of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis... Scrotum - Categories: Stub | Andrology | Exocrine system | Reproductive system ... Seminal vesicles - Male Anatomy The spermatic cord is the name given to the cord-like structure formed by the vas deferens and surrounding tissue (veins, arteries, nerves, and lymphatic vessels) that run from the abdomen down to each testicle. The spermatic cord is sensitive to torsion, in which the testicle rotates within... Spermatic cord - Human male anatomy The testicles, known medically as testes (singular testis), are the male generative glands in animals. Male mammals have two testicles, contained within an extension of the abdomen called the scrotum. Function Like the ovaries (to which they are homologous), testicles are components of both the reproductive system... Testes - Male anatomy Female anatomy In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. The urethra has an excretory function in both sexes, to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm... Urethra - Male Anatomy The vas deferens, also called ductus deferens, (Latin: carrying-away vessel) is part of the human male anatomy. There are two of them; they are muscular tubes (surrounded by smooth muscle) connecting the left and right epididymis to the ejaculatory ducts in order to move sperm. Each tube... Vas deferens


The endocrine system is a control system of ductless endocrine glands that secrete chemical messengers called hormones that circulate within the body via the bloodstream to affect distant organs. It does not include exocrine glands such as salivary glands, sweat glands and glands within the gastrointestinal tract. Signal transduction of... Endocrine system
In mammals, the adrenal glands are the triangle-shaped endocrine glands that sit atop the kidneys. They are chiefly responsible for regulating the stress response through the synthesis of corticosteroids and catecholamines, including cortisol and adrenalin. Overview Anatomically, the adrenal gland is situated on the anteriosuperior aspect of the kidney... Adrenal gland - The corpus luteum (Latin for yellow body) is a small, temporary endocrine structure in mammals that develops from an ovarian follicle after it has released a mature egg. The corpus luteum secretes the hormone progesterone, which thickens the uterine lining in preparation for the fertilized egg. If the egg is... Corpus luteum - In the anatomy of mammals, the hypothalamus is a region of the brain located below the thalamus, forming the major portion of the ventral region of the diencephalon and functioning to regulate certain metabolic processes and other autonomic activities. The hypothalamus links the nervous system to the endocrine system by... Hypothalamus - Ovaries - The pancreas is a retroperitoneal organ that serves two functions: exocrine - it produces pancreatic juice containing digestive enzymes endocrine - it produces several important hormones Anatomy The pancreas is a retroperitoneal organ located posterior to the stomach on the posterior abdominal wall. In humans the pancreas is a small elongated organ... Pancreas - Categories: Anatomy stubs | Endocrine system ... Parathyroid gland - The pineal gland (pronunciation: pI-nE-&l, pI-), or epiphysis, is a small endocrine gland located near the middle of the brain. It is also referred to as the pineal body. Location The pineal gland is a small (8 mm) reddish-gray body located above the superior colliculus and... Pineal gland - Located at the base of the skull, the pituitary gland is protected by a bony structure called the sella turcica. The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in the small, bony cavity (sella turcica) at the base of the brain... Pituitary gland - Human male anatomy The testicles, known medically as testes (singular testis), are the male generative glands in animals. Male mammals have two testicles, contained within an extension of the abdomen called the scrotum. Function Like the ovaries (to which they are homologous), testicles are components of both the reproductive system... Testes - The thyroid gland and its relations In anatomy, the thyroid (IPA θaɪɹoɪd) is an endocrine gland. It is situated on the front side of the neck at the level of C5 and T1 vertebral bodies, just below the Adams apple, near the thyroid... Thyroid gland


  Results from FactBites:
 
Ovary definition - Medical Dictionary definitions of popular medical terms (228 words)
Ovary: The female gonad, the ovary is one of a pair of reproductive glands in women.
Each ovary is about the size and shape of an almond.
The ovaries are the main source of female hormones, which control the development of female body characteristics, such as the breasts, body shape, and body hair.
Ovary - Wikipedia, the free encyclopedia (475 words)
Ovaries are egg-producing reproductive organs found in female organisms.
Ovaries (aka tomkuns) are part of the vertebrate female reproductive system.
Ovaries in females are homologous to testes in males.
  More results at FactBites »

 
 

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