FACTOID # 30: If Alaska were its own country, it would be the 26th largest in total area, slightly larger than Iran.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Ventromedial nucleus
Brain: Ventromedial nucleus
Ventromedial nucleus is 'VM', at center, in green.
Latin nucleus ventromedialis hypothalami
Part of Hypothalamus
Artery Basilar
NeuroNames hier-381
MeSH Ventromedial+Hypothalamic+Nucleus
Dorlands/Elsevier n_11/12584102

The ventromedial nucleus of the hypothalamus (sometimes referred to as the ventromedial hypothalamus) has four subdivisions: anterior (VMHa), dorsomedial (VMHdm), ventrolateral (VMHvl), and central (VMHc). These subdivisions differ anatomically, neurochemically, and behaviorally. Image File history File links Download high-resolution version (769x603, 447 KB) Hypothalamic Nuclei File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Hypothalamus Supraoptic nucleus Paraventricular nucleus Suprachiasmatic nucleus Arcuate nucleus Median eminence Ventromedial nucleus Posterior nucleus (hypothalamus... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... The hypothalamus (from Greek ὑποθαλαμος = under the thalamus) is a region of the mammalian 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 basilar artery is one of the arteries which the brain supplies with oxygen-rich blood. ... NeuroNames is a system of nomenclature for the brain and related structures. ... 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. ... Elseviers logo. ... The hypothalamus (from Greek ὑποθαλαμος = under the thalamus) is a region of the mammalian 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 VMHdm has a role in the male vocalizations and scent marking behaviors (Yahr and Green, 1992; Flanagan-Cato et al. 2001l harding and McGinnis, 2005).


The VMHvl plays a role in sexual behaviors in both the males and the females (lordosis in the females and mounting in the males (Kow and Pfaff, 1998; Christensen et al., 1977, Pfaff and Sakuma, 1979; marsumoto and ymanouchi, 2000).


References

  • Dugger, et al. (2007). Androgen receptors are required for full masculinization of the ventromedial hypothalamus (VMH) in rats.

External links

  • Diagram of Ventromedial motor tract at lemoyne.edu
  • New Scientist: Seat of female libido revealed (June 26, 2006)

  Results from FactBites:
 
Estrogen regulates preproenkephalin-A mRNA levels in the rat ventromedial nucleus: temporal and cellular aspects. (313 words)
Numerous studies suggest that the ventromedial nucleus of the hypothalamus is a primary locus of control for reproductive behavior in the female rat.
To characterize the temporal and cellular aspects of the effect of an acute exposure to estrogen on preproenkephalin-A mRNA levels in the ventromedial nucleus and arcuate nucleus of the hypothalamus, ovariectomized female rats were injected with 50 micrograms estradiol benzoate and used for quantitative in situ hybridization histochemistry of preproenkephalin-A mRNA.
Thus, acute estrogen treatment induces expression of preproenkephalin-A mRNA in populations of cells in the ventromedial hypothalamus and arcuate nucleus in which preproenkephalin-A mRNA expression is undetectable by in situ hybridization in the absence of circulating estrogen.
About Gender: The Brain. (3158 words)
There are connections to the suprachiasmatic nucleus in the hypothalamus, to provide information about night and day, working in conjunction with pineal gland, generating circadian rhythms.
Gorski and his colleagues found a group of cells, which they called the sexually dimorphic nucleus, that was much larger in male rats than in females.
He adds that, in females, the region of note is the ventromedial nucleus, which is also involved in feeding behaviour.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m