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The zona pellucida (or zona striata in older texts) is a glycoprotein membrane surrounding the plasma membrane of an oocyte. It is a vital constitutive part of the latter, external but not extraneous to it. The blastocyst stage of development in the embryos of humans is around 5 days old with 30-150 cells. ...
The blastocyst is the structure formed in early mammalian embryogenesis, after the formation of the blastocele, but before implantation. ...
2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the Anno Domini (common) era. ...
February 28 is the 59th day of the year in the Gregorian calendar. ...
File links The following pages link to this file: Ovum Wikipedia:Grays Anatomy images with missing articles 1 Categories: Public domain images ...
A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ...
The corona radiata surround an ovum or unfertilized egg cell, and consist of two or three strata (layers) of follicular cells. ...
Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ...
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A glycoprotein is a macromolecule composed of a protein and a carbohydrate (an oligosaccharide). ...
Drawing of a cell membrane A component of every biological cell, the cell membrane (or plasma membrane) is a thin and structured bilayer of phospholipid and protein molecules that envelopes the cell. ...
An oocyte or ovocyte is a female gametocyte or germ cell involved in reproduction. ...
This structure binds spermatozoa, and is required to initiate the acrosome reaction. 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 ( spermatozoa) (in Greek: sperm = semen and zoon = alive), is the haploid cell that is the male gamete. ...
In sperm cells of many higher animals, the acrosome develops over the anterior half of its head. ...
The zona glycoprotein, ZP3, is responsible for sperm binding, adhering to proteins on the sperm plasma membrane. There is evidence that ZP3 is then involved in the induction of the acrosome reaction, whereby a spermatozoon releases the contents of the acrosomal vesicle. A representation of the 3D structure of myoglobin, showing coloured alpha helices. ...
In spermatozoa of many animals, the acrosome is an organelle that develops over the anterior half of the spermatozoons head. ...
Function in humans In humans, five days after the fertilization the membrane degenerates and decomposes to be replaced by the underlying layer of trophoblastic cells. The zona pellucida is essential for oocyte survival and fertilization. An oocyte or ovocyte is a female gametocyte or germ cell involved in reproduction. ...
Categories: Biology stubs ...
Immunocontraception Glycoproteins in ZP1, 2, and 3 are targets for immunocontraception. In non-mammalian animals, the zona pellucida (called vitelline layer) plays an important role in preventing breeding of different species, especially in species that fertilize outside of the body (e.g. fish). The vitelline membrane is a structure directly adjacent to the outer surface of the plasma membrane of an ovum. ...
A giant grouper at the Georgia Aquarium Fish are aquatic vertebrates that are typically cold-blooded; covered with scales, and equipped with two sets of paired fins and several unpaired fins. ...
The zona pellucida is commonly used to control wildlife population problems by immunocontraception. When the zona pellucida of one animal species is injected into the bloodstream of another, it results in sterility of the second species due to immune response. This effect can be temporary or permanent, depending on the method used. In New Jersey, Porcine zona pellucida is used to keep deer populations low, and this process is commonly referred to as "spay-vac". For the Bon Jovi album, see New Jersey (album) Official language(s) None, English de facto Capital Trenton Largest city Newark Area Ranked 47th - Total 8,729 sq mi (22,608 km²) - Width 70 miles (110 km) - Length 150 miles (240 km) - % water 14. ...
Porcine zona pellucida is a form of zona pellucida extracted from the ovaries of pigs. ...
Fawn redirects here. ...
Additional images Early folliculogenesis from primordial to early tertiary. Image File history File links Follicle_histology. ...
The image above is believed to be a replaceable fair use image. It will be deleted on 2007-03-08 if not determined to be irreplaceable. If you believe this image is not replaceable, follow the instructions on the image page to dispute this assertion. 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the Anno Domini (common) era. ...
March 8 is the 67th day of the year in the Gregorian Calendar (68th in leap years). ...
| First stages of segmentation of a mammalian ovum. Image File history File links Gray9. ...
A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ...
| Section of vesicular ovarian follicle of cat. x50. Image File history File links Gray1164. ...
| References - Oehninger S (2003). "Biochemical and functional characterization of the human zona pellucida.". Reprod Biomed Online 7 (6): 641-8. PMID 14748962.
- Bagnell, C. 2005. "Animal Reproduction". Rutgers University Department of Animal Sciences.
External links | v • d • e Female reproductive system | | Ovaries/Oogenesis: Germinal epithelium - Tunica albuginea - cortex (Cumulus oophorus, Stroma) - Medulla Follicles/Folliculogenesis: corpus (hemorrhagicum, luteum, albicans) - Theca folliculi (externa, interna) - Follicular antrum (Follicular fluid) - Corona radiata - Zona pellucida - Membrana granulosa (Granulosa cells) For the unrelated Jesuit university in Chestnut Hill, see Boston College. ...
For the unrelated Jesuit university in Chestnut Hill, see Boston College. ...
The University of Southern California (commonly referred to as USC, SC, Southern California, and incorrectly as Southern Cal[1]), located in the University Park neighborhood in Los Angeles, California, USA, was founded in 1880, making it Californias oldest private research university. ...
The University of Southern California (commonly referred to as USC, SC, Southern California, and incorrectly as Southern Cal[1]), located in the University Park neighborhood in Los Angeles, California, USA, was founded in 1880, making it Californias oldest private research university. ...
The University of California, Davis, commonly known as UC Davis, is one of the ten campuses of the University of California, and was established as the University Farm in 1905. ...
The human females reproductive system. ...
For ovary as part of plants see ovary (plants) Ovaries are egg-producing reproductive organs found in female organisms. ...
Oogenesis is the creation of an ovum (egg cell) in the ovarian follicle of the ovary. ...
The surface of the ovary is covered by a layer of columnar cells which constitutes the germinal epithelium of Waldeyer. ...
On the surface of the ovary this tissue is much condensed, and forms a layer, the tunica albuginea, composed of short connective-tissue fibers, with fusiform cells between them. ...
At one part of the mature follicle the cells of the membrana granulosa are collected into a mass which projects into the cavity of the follicle. ...
The stroma of the ovary is a peculiar soft tissue, abundantly supplied with bloodvessels, consisting for the most part of spindle-shaped cells with a small amount of ordinary connective tissue. ...
The medulla of ovary (or Zona vasculosa of Waldeyer) is a highly vascular stroma in the center of the ovary. ...
Ovarian follicles or Graafian follicles (after Regnier de Graaf) are the roughly spherical cell aggregations in the ovary containing an ovum and from which the egg is released during ovulation. ...
In biology, folliculogenesis refers to the maturation of the ovarian follicle, a densely-packed shell of somatic cells that contains an immature oocyte. ...
The corpus hemorrhagicum (bloody body) is a temporary structure formed immediately after ovulation from the ovarian follicle. ...
The corpus luteum (Latin for yellow body) is a small, temporary endocrine structure in animals. ...
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 theca folliculi comprise a layer of the ovarian follicles. ...
The theca externa is the outer layers of the theca folliculi. ...
In biology, folliculogenesis refers to the maturation of the ovarian follicle, a densely-packed shell of somatic cells that contains an immature oocyte. ...
The follicular antrum is the portion of an ovarian follicle filled with liquor folliculi. ...
Follicular fluid is a liquid which fills the follicular antrum and surrounds the ovum in an ovarian follicle UIUC Histology Subject 1083 MeSH Follicular+fluid Diagram at med. ...
For the structure in neuroanatomy, see Corona radiata. ...
The larger ovarian follicles consist of an external fibrovascular coat, connected with the surrounding stroma of the ovary by a net-work of bloodvessels; and an internal coat, which consists of several layers of nucleated cells, called the membrana granulosa. ...
Cells in culture, stained for keratin (red) and DNA (green) The cell is the structural and functional unit of all living organisms, and are sometimes called the building blocks of life. ...
Ligaments: Proper - Suspensory - Round - Broad (Mesovarium, Mesosalpinx, Mesometrium) - Cardinal The ovarian ligament (also called the utero-ovarian ligament or proper ovarian ligament) is a fibrous ligament that connects the ovary to the lateral surface of the uterus. ...
The suspensory ligament of the ovary (also infundibulopelvic ligament) is a fold of peritoneum that surrounds the ovarian artery and vein as they extend out from the ovary. ...
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The broad ligament of the uterus refers to the wide fold of peritoneum that connects the sides of the uterus to the walls and floor of the pelvis. ...
At first the mesonephros and genital ridge are suspended by a common mesentery, but as the embryo grows the genital ridge gradually becomes pinched off from the mesonephros, with which it is at first continuous, though it still remains connected to the remnant of this body by a fold of...
The portion of the broad ligament which stretches from the uterine tube to the level of the ovary is known by the name of the mesosalpinx. ...
The mesometrium is the mesentery of the uterus. ...
The cardinal ligament (or lateral cervical ligament) is at the base of the broad ligament of the uterus (though it is not usually considered on of the three traditional divisions of that ligament. ...
Fallopian tubes: Isthmus - Ampulla - Infundibulum - Fimbria 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. ...
The first part of the uterine tube is the isthmus tubae uterinae. ...
The ampulla is the second portion of the uterine tube. ...
The third part of the uterine tube is the the infundibulum. ...
Uterus and uterine tubes In the female reproductive system, the fimbria is a fringe of tissue near the ovary leading to the Fallopian tube. ...
Uterus: cervix/neck (External orifice, Canal of the cervix, Internal orifice) - corpus/body (Cavity of the body, Fundus) - layers (Endometrium, Myometrium, Perimetrium) The uterus or womb is the major female reproductive organ of most mammals, including humans. ...
Schematic frontal view of female anatomy The cervix (from Latin neck) is the lower, narrow portion of the uterus where it joins with the top end of the vagina. ...
The external orifice of the uterus (or ostium of uterus, or external os) is a small, depressed, somewhat circular aperture on the rounded extremity of the vaginal portion of the cervix. ...
The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ...
The internal orifice of the uterus (or internal orifice of the cervix uteri or internal os) is a interior narrowing of the uterine cavity. ...
The Cavity of the Body in the uterus is a mere slit, flattened antero-posteriorly. ...
The fundus of the uterus is the top portion opposite from the cervix. ...
The endometrium is the inner uterine membrane in mammals which is developed in preparation for the implantation of a fertilized egg upon its arrival into the uterus. ...
The myometrium is the middle layer of the uterine wall consisting of smooth muscle cells and supporting stromal and vascular tissue. ...
Uterus and uterine tubes The perimetrium is the outer serosa layer of the uterus, covered in peritoneum. ...
Vulva: Mons pubis - Labium (Labial commissures, Frenulum labiorum pudendi, Labia majora, Cleft of venus, Labia minora, Vulval vestibule, interlabial sulci) - Clitoris (Clitoral hood , Clitoral glans, Frenulum clitoridis, Clitoral crura, Corpus cavernosa, Vestibular bulbs) - Vagina (Bartholin's glands, Bartholin's ducts, Skene's glands, Skene's ducts , Fossa of vestibule of vagina, Fornix vaginae, Hymen) Labeled picture of external human female reproductive anatomy. ...
In human anatomy or in mammals in general, the mons pubis (Latin, pubic mound) is the soft mound of flesh present in both genders just above the genitals, raised above the surrounding area due to a pad of fat lying just beneath it which protects the pubic bone. ...
Anterior view of an adult woman with pubic hair removed, showing labia majora. ...
Labial commissures are junctions of the labia of the vulva. ...
In female human anatomy, the frenulum labiorum pudendi (aka. ...
Parts of a vulva The external genital organs of the female are collectively known as the vulva (also sometimes called the pudenda). ...
The Cleft of Venus or pudendal cleft is the furrow at the base of the Mons veneris where it divides to form the labia majora. ...
The labia minora (nymphae) are two small cutaneous folds, situated between the labia majora, and extending from the clitoris obliquely downward, lateralward, and backward for about 4 cm. ...
The Vulval vestibule (or Vulvar vestibule) is a part of the vulva between the labia minora that the urethra and the vagina open into. ...
The interlabial sulci are the grooves between the labia majora and the labia minora. ...
The clitoris (Greek ) is a female sexual organ. ...
In female human anatomy, the clitoral hood, (also called prepuce), is a fold of skin that surrounds and protects the clitoral glans. ...
The Clitoral Glans is an external portion of the clitoris. ...
The Frenulum clitoridis (also known as the Crus glandis clitoridis) is a frenulum that surrounds the clitoris. ...
The clitoral crura are an internal portion of the clitoris. ...
The clitoris is homologous to the corpus cavernosum penis in the male. ...
The Vestibular Bulbs, also known as the Clitoral Bulbs, are an internal part of the Clitoris next to the clitoral body, clitoral crura, urethra, urethral sponge, and 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. ...
The Bartholins glands (also called Bartholin glands or greater vestibular glands) are two glands located slightly below and to the left and right of the opening of the vagina in women. ...
Bartholins ducts are a pair of ducts leading from the Bartholins glands to the surface of the vulva. ...
In human anatomy, the Skenes glands (also known as the lesser vestibular or paraurethral glands) are glands located on the upper wall of the vagina, around the lower end of the urethra. ...
The Skenes ducts are a pair of ducts leading from the Skenes glands to the surface of the vulva, to the left and right of the urethral opening. ...
Between the hymen and the frenulum of the labia is the fossa of vestibule of vagina (or fossa navicularis), while in the groove between the hymen and the labium minus, on either side, the small opening of the greater vestibular gland (Bartholinâs) can be seen. ...
The fornices of the vagina are the deepest portions of the vagina, extending into the recesses created by the extension of the cervix into the vaginal space. ...
For the Greek god, see Hymenaios. ...
Breast: Mammary glands - Nipple - Areola - Lactiferous duct A pregnant womans breasts. ...
Cross section of the breast of a human female. ...
Typical human female nipple and areola. ...
This article or section is not written in the formal tone expected of an encyclopedia article. ...
Lactiferous ducts are lobes of the mammary gland at the tip of the nipple. ...
G-spot - Urethral sponge ...
Female internal reproductive anatomy The urethral sponge is a spongy cushion of tissue, found in the lower genital area of women, that sits against both the pubic bone and vaginal wall, and surrounds the urethra. ...
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