*Ovarian follicle

Any ovarian follicle that is larger than about two centimeters is termed an ovarian cyst. Ovarian function may be measured by ... "What Is an Ovarian Follicle?". wiseGEEK.org. wiseGEEK. Retrieved 24 May 2015. Luijkx, Tim. "Ovarian follicle". radiopaedia.org ... A histological slide of a human primary ovarian follicle in greater magnification. Antral follicle David Krogh (2010), Biology ... Tertiary vesicular follicles (also called "mature vesicular follicles" or "ripe vesicular follicles") are sometimes called ...

*Ovarian follicle activation

... can be defined as primordial follicles in the ovary moving from a quiescent (inactive) to a growing ... This results in follicle depletion in early adulthood, causing POF. As well as having many genetic causes, premature ovarian ... noted that the timing and level of the Foxo3 expression is very important to regulate ovarian follicle activation. AKt- PTEN- ... Additionally, PCNA has been suggested to act as a key regulator of ovarian follicle development. The temporal expression of ...

*Atresia

Ovarian follicle atresia, the degeneration and subsequent resorption of one or more immature ovarian follicles. Potter sequence ... Kaipia, A.; Hsueh, A. J. W. (1997). "Regulation of Ovarian Follicle Atresia". Annual Review of Physiology. 59: 349-363. doi: ...

*Sardul Singh Guraya

Ovarian follicles in reptiles and birds. Springer London, Limited. ISBN 978-3-540-50416-0. Sardul S. Guraya (1997). Ovarian ... ISBN 978-3-8055-4253-1. Sardul S. Guraya (1989). Ovarian follicles in reptiles and birds. Springer London, Limited. ISBN 978-3- ... Sardul S. Guraya (1997). Ovarian Biology in Buffaloes and Cattle. Directorate of Information and Publication of Agriculture, ... with special emphasis on the ovarian and testicular compartments. His findings on the developmental traits of crops was ...

*Sex cords

After further development they become the ovarian follicles. The primitive sex cords originate from the proliferation of the ...

*Patriarch hypothesis

doi:10.1016/s0015-0282(00)00417-9. Hsueh, A.J.W.; Billing, H.; Tsafriri, A. (1994). "Ovarian Follicle Atresia: A Hormonally ... Increasing the ovarian follicular reserve is difficult. There are few explanations on density restrictive mechanisms other than ... More importantly there is a lack of understanding why 70-99.9% of mammalian follicles are subjected to atresia. Future analysis ...

*Transvaginal oocyte retrieval

Next, other follicles are aspirated. Once the ovarian follicles have been aspirated on one ovary, the needle is withdrawn, and ... When the ovarian follicles have reached a certain degree of development, induction of final oocyte maturation is performed, ... Under ultrasound guidance, the operator inserts a needle through the vaginal wall and into an ovarian follicle, taking care not ... sonographically controlled ovarian follicle puncture for egg retrieval". Lancet. 1: 1467. PMID 6145902. Bracha J.; Lotan M.; ...

*Shorthead garter snake

Females generally emerge with ovarian follicles already well developed. Females in New York breed every other year while ...

*Development of the gonads

Sawyer H, Smith P, Heath D, Juengel J, Wakefield S, McNatty K (2002). "Formation of ovarian follicles during fetal development ... In this way, the rudiments of the ovarian follicles are formed. The embryological origin of granulosa cells remains ... the rudiments of the ovarian follicles are formed. In the testis, a network of tubules fuse to create the seminiferous tubules ... The part of the gubernaculum between the ovary and the uterus ultimately becomes the proper ovarian ligament, while the part ...

*Follicular atresia

Advanced maternal age Female infertility Folliculogenesis Oogenesis Ovarian aging Ovarian follicle Ovarian reserve Premature ... Typically around 20 follicles mature each month but only a single follicle is ovulated; the follicle from which the oocyte was ... Follicular atresia is inhibited by follicle-stimulating hormone (FSH), which promotes follicle development. Once the follicle ... "Regulation of ovarian follicle atresia." Annual Review of Physiology 59.1 (1997): 349-363.] [Marshall, J. C., et al. "Selective ...

*Ovarian cortex

The ovarian cortex is the outer portion of the ovary. The ovarian follicles are located within the ovarian cortex. Ovarian ... "Ovarian cortex transplantation: 60 reported live births brings the success and worldwide expansion of the technique towards ...

*Theca of follicle

The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become secondary follicles. The ... Theca cells are only correlated with developing ovarian follicles. They are the leading cause of endocrine-based infertility, ... the forgotten cell of the ovarian follicle". Reproduction. 140 (4): 489-504. doi:10.1530/REP-10-0094. PMID 20628033. Magoffin, ... Theca cells are a group of endocrine cells in the ovary made up of connective tissue surrounding the follicle that has many ...

*Granulosa cell

In the primary ovarian follicle, and later in follicle development (folliculogenesis), granulosa cells advance to form a ... Sawyer H, Smith P, Heath D, Juengel J, Wakefield S, McNatty K (2002). "Formation of ovarian follicles during fetal development ... The sex steroid production begins with follicle-stimulating hormone (FSH) from the anterior pituitary, stimulating granulosa ... In 2013 it was proposed that both granulosa cells and the ovarian surface epithelial cells are instead derived from a precursor ...

*Jeholornis

Zheng, X.; O'Connor, J.; Huchzermeyer, F.; Wang, X.; Wang, Y.; Wang, M.; Zhou, Z. (2013). "Preservation of ovarian follicles ...

*Retrotransposon Silencing

2013). The nuage mediates retrotransposon silencing in mouse primordial ovarian follicles. [Article]. Development, 140(18), ...

*Endothelin 2

... and human ovarian tissue. Endothelin 2 has functions within the ovarian follicle related to ovulation. ET-2 causes strong ... Endothelin-2 in Ovarian Follicular Rupture. Endocrinology. 147:1770-1779. Na, G., P.J. Bridges, Y. Koo, C. Ko. 2008. Role of ... Endothelin 2 (ET-2) expression is mainly localized to the granulosa cells within the follicle, as observed in bovine, murine, ... Meidan R, Levy N (December 2007). "The ovarian endothelin network: an evolving story". Trends in Endocrinology and Metabolism. ...

*Corpus luteum

It is the remains of the ovarian follicle that has released a mature ovum during a previous ovulation. It is colored as a ... Its cells develop from the follicular cells surrounding the ovarian follicle. The follicular theca cells luteinize into small ... The corpus luteum develops from an ovarian follicle during the luteal phase of the menstrual cycle or oestrous cycle, following ... The follicle first forms a corpus hemorrhagicum before it becomes a corpus luteum, but the term refers to the visible ...

*Anovulation

The resulting hMG induces the stimulation of several ovarian follicles. This increases the risk of producing several oocytes ... In some cases, the egg may have matured properly, but the follicle may have failed to burst (or the follicle may have burst ... A cycle with supernumerary follicles is usually defined as one where there are more than two follicles >16 mm in diameter. It ... Follicle-stimulating hormone (FSH or recombinant FSH) is now used as a replacement for hMG. Although hMG is a combination of ...

*Progesterone devices used in farm animals

2001). Persistent ovarian follicles in dairy cows: a therapeutic approach. Theriogenology, 56 (4), p649-59. ... Treatment of follicular cysts Persistent ovarian follicles Improve oocyte quality Reduction of early embryonic death and ... A dominant follicle develops but there is no ovulation as LH release is prevented by suppression of GnRH. Removal of ... The PGF2α injection helps to ensure there is no residual CL and the potentially ovulating follicle has been held primed for ...

*Biochemical cascade

"Disruption of gap junctional communication within the ovarian follicle induces oocyte maturation". Endocrinology. 147 (5): 2280 ... protein kinase mediates luteinizing hormone-induced breakdown of communication and oocyte maturation in rat ovarian follicles ... Kidder, GM; Vanderhyden, BC (Apr 2010). "Bidirectional communication between oocytes and follicle cells: ensuring oocyte ... bone morphogenetic protein 15 heterodimers are potent regulators of ovarian functions". Proceedings of the National Academy of ...

*Zona pellucida

It is secreted by both the oocyte and the ovarian follicles. The zona pellucida is surrounded by the cumulus oophorus. The ... First stages of segmentation of a mammalian ovum Section of vesicular ovarian follicle of cat, x 50 The initial stages of human ... multilaminar primary follicle" Anatomy photo: Reproductive/mammal/ovary2/ovary7 - Comparative Organology at University of ...

*Cryoconservation of animal genetic resources

... a needle is inserted into each ovarian follicle and pulled out via vacuum. The major benefit of using this method is the ... Follicle stimulating hormone is the preferred hormone in cattle, sheep and goats. While in pigs, equine chorionic gonadotropin ... Pregnant cows and mares continue to develop new follicles until the middle of pregnancy. Thus, TUGA can be used to ...

*Bohaiornithidae

"A new Jehol enantiornithine bird with three-dimensional preservation and ovarian follicles". Journal of Vertebrate Paleontology ...

*Polycystic ovary syndrome

... ovarian cysts. These "cysts" are actually immature follicles not cysts. The follicles have developed from primordial follicles ... specifically looking for small ovarian follicles. These are believed to be the result of disturbed ovarian function with failed ... The follicles may be oriented along the ovarian periphery, appearing as a 'string of pearls' on ultrasound examination.[ ... The phenotype appears to manifest itself at least partially via heightened androgen levels secreted by ovarian follicle theca ...

*Carolina anole

The female matures one ovarian follicle at a time, the ovaries alternating in production. The sight of a courting male induces ... ovarian development, sexual receptiveness and then ovulation. About two to four weeks following mating, the female lays her ...

*Development of the reproductive system

... the rudiments of the ovarian follicles are formed. The embryological origin of granulosa cells, on the other hand, remains ... The gubernaculum later becomes the proper ovarian ligament and the round ligament of the uterus. The periphery of the testes ...