Follicular antrum

Information about Follicular antrum

Mature late-stage tertiary (Graffian) follicle.
Early folliculogenesis from primordial to early tertiary.
Latinantrum follicularum
Dorlands/Elsevier a_50/12143527
The follicular antrum is the portion of an ovarian follicle filled with liquor folliculi.

See also

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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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Ovarian follicles are the basic unit of female reproductive biology, they are roughly spherical aggregations of cells found in the ovary. They contain a single oocyte (aka ovum or egg).
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Follicular fluid is a liquid which fills the follicular antrum and surrounds the ovum in an ovarian follicle. This fluid is rich in hyaluronic acid.

External links

  • UIUC Histology Subject 1083
  • MeSH Follicular+fluid
  • Diagram at med.mun.

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In Biology, "Antrum" is a general term for a cavity or chamber which may have specific meaning in reference to certain organs or sites in the body.

Examples include
  • antrum cardiacum - a dilation that occurs in the esophagus near the stomach (forestomach)

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University of Kansas (often referred to as KU or just Kansas) is an institution of higher learning in Lawrence, Kansas. The main campus resides atop Mount Oread. The University was founded in 1865 by the citizens of Lawrence under a charter from the Kansas Legislature.
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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.
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Sexual reproduction.


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.
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The reproductive system is the ensembles and interactions of organs and/or substances within an organism that strictly pertain to reproduction. As an example, this would include in the case of female mammals, the hormone estrogen, ova, and the uterus and the vagina, and the breasts.
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For ovary as part of plants see ovary (plants)
An ovary is an egg-producing reproductive organ found in female organisms. They are usually purple. It is often found in pairs as part of the vertebrate female reproductive system.
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Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). It is the female process of gametogenesis. It involves the various stages of immature ova.

Oogenesis in mammals

In mammals, oogenesis occurs in the ovarian follicle of the ovary.
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The surface of the ovary is covered by a layer of columnar cells which constitutes the germinal epithelium of Waldeyer. (Some sources consider it simple cuboidal.[1]
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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.
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cumulus oophorus( Latin cumulus=heap Greek or oo=egg phorus=carrying)discus proligerus, and in it the ovum is imbedded.

External links

  • Organology at UC Davis Reproductive/mammal/ovary5/ovary3

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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.
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The medulla of ovary (or Zona vasculosa of Waldeyer) is a highly vascular stroma in the center of the ovary.

This stroma forms the tissue of the hilum by which the ovary is attached, and through which the bloodvessels enter: it does not contain any ovarian follicles.
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Ovarian follicles are the basic unit of female reproductive biology, they are roughly spherical aggregations of cells found in the ovary. They contain a single oocyte (aka ovum or egg).
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folliculogenesis is the maturation of the ovarian follicle, a densely-packed shell of somatic cells that contains an immature oocyte. Folliculogenesis describes the progression of a number of small primordial follicles into large preovulatory follicles
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The corpus hemorrhagicum ("bloody body") is a temporary structure formed immediately after ovulation from the ovarian follicle. After the trauma heals, the subsequent structure is called the corpus luteum (which in turn becomes the corpus albicans before degenerating.
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The corpus luteum (Latin for "yellow body") (plural corpora lutea) is a temporary endocrine structure in mammals, involved in the production of the progestogens which are needed for the maintenance of a pregnancy.
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corpus albicans (Latin for "white body" ) is the regressed form of the corpus luteum. As the corpus luteum is being broken down by macrophages, fibroblasts lay down type I collagen, forming the corpus albicans. This process is called "luteolysis".
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The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become tertiary follicles.

The theca are divided into two layers: theca interna and theca externa.
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The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become tertiary follicles.

The theca are divided into two layers: theca interna and theca externa.
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The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become tertiary follicles.

The theca are divided into two layers: theca interna and theca externa.
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Follicular fluid is a liquid which fills the follicular antrum and surrounds the ovum in an ovarian follicle. This fluid is rich in hyaluronic acid.

External links

  • UIUC Histology Subject 1083
  • MeSH Follicular+fluid
  • Diagram at med.mun.

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For the structure in neuroanatomy, see Corona radiata.
The corona radiata surround an ovum or unfertilized egg cell, and consist of two or three strata (layers) of follicular cells.
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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.
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membrana granulosa. It contains numerous granulosa cells.

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. This is termed the discus proligerus.
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A granulosa cell is a somatic cell found closely associated with the developing female gamete (called an oocyte or egg) in the ovary of mammals.

Anatomy and function


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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.
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