Wikia

Psychology Wiki

Changes: Mammillary bodies

Edit

Back to page

m (moved Mammillary body to Mammillary bodies over redirect: plural)
(update wp)
 
Line 1: Line 1:
  +
{{Biopsy}}
 
{{Infobox Brain|
 
{{Infobox Brain|
Name = {{PAGENAME}} |
+
Name = Mammillary body |
 
Latin = corpus mamillare |
 
Latin = corpus mamillare |
 
GraySubject = 188 |
 
GraySubject = 188 |
Line 8: Line 9:
 
Image2 = Gray718.png |
 
Image2 = Gray718.png |
 
Caption2 = Coronal section of brain through intermediate mass of third ventricle. (Label "corpus mamillare" at bottom.) |
 
Caption2 = Coronal section of brain through intermediate mass of third ventricle. (Label "corpus mamillare" at bottom.) |
IsPartOf = |
+
IsPartOf = [[Midbrain]]|
Components = |
+
System = [[Limbic system|Limbic]]|
  +
Components = [[medial mammillary nucleus]] <br/> [[lateral mammillary nucleus]]|
 
Artery = |
 
Artery = |
 
Vein = |
 
Vein = |
Line 17: Line 18:
 
MeshName = Mamillary+Bodies |
 
MeshName = Mamillary+Bodies |
 
MeshNumber = A08.186.211.730.385.357.362.500 |
 
MeshNumber = A08.186.211.730.385.357.362.500 |
  +
NeuroLex = Mammillary body
  +
| NeuroLexID = birnlex_865 |
 
}}
 
}}
The '''mammillary bodies''' are a pair of small round bodies in the [[brain]] forming part of the [[limbic system]]. They are located at the ends of the [[anterior]] arches of the [[fornix]], and are named ''mammillary'' for their resemblance to two [[breast]]s. They consist of two groups of nuclei, the [[medial mammillary nuclei|medial]] and [[lateral mammillary nuclei|lateral]] nuclei. They are connected to other parts of the brain as shown in the schematics below.
+
The '''mammillary bodies''' (mamillary bodies) are a pair of small round bodies, located on the undersurface of the [[brain]], that form part of the [[limbic system]]. They are located at the ends of the [[anterior]] arches of the [[fornix of brain|fornix]]. They consist of two groups of nuclei, the medial mammillary nuclei and the lateral mammillary nuclei.<ref>http://www.cf.ac.uk/psych/resources/vann2004.pdf Reference for the two groups of nuclei (not for the text before).</ref><br />Neuroanatomists have often categorized the mammillary bodies as part of the [[hypothalamus]].<ref>M.B. Carpenter and J. Sutin: ''Human Neuroanatomy'' (8th edition) 1983</ref>
   
[[image:Mammillary-bodies-schematics.jpg|thumb|300px|Schematic]]
+
==Connections==
  +
They are connected to other parts of the brain (as shown in the schematic, below left), and act as a relay for impulses coming from the [[amygdala]]e and [[hippocampus|hippocampi]], via the [[mamillo-thalamic tract]] to the [[thalamus]].
   
The mammillary bodies are parts of the brain known to be significantly damaged by [[grain alcohol|alcohol]] [[intoxication]]. Researchers in [[1998]] also noted visible abnormalities in the mammillary bodies of individuals with [[autism]].
+
This circuit, from amygdalae to mammillary bodies, and then on to the thalamus, is part of the larger '[[Papez circuit]]'.
   
Damage to the mammillary bodies can result from [[Wernicke-Korsakoff syndrome]]. Symptoms include impaired memory, also called [[anterograde amnesia]]; this suggests that the mammillary bodies might be important for [[memory]].
+
==Function==
  +
They, along with the anterior and dorsomedial nuclei in the thalamus, are involved with the processing of recognition memory.
   
The name "mammillary bodies" refers to the resemblence of the protrusions to a pair of breasts on the ventral surface of the brain.
+
They are believed to add the element of smell to memories.
   
{{neuroscience-stub}}
+
==Pathology==
  +
The mammillary bodies are parts of the brain known to be significantly damaged by untreated Obstructive Sleep Apnea [[Hypoxia (medical)|Hypoxia]],and associated with deficiency of [[thiamine]]. Researchers, in [[2008]], also noted visible abnormalities in the mammillary bodies of individuals with [[Obstructive Sleep Apnea]].<ref>[http://www.conradsimon.org/AuditorySystem.shtml - "The Auditory System: Anatomy and Maturation" at www.conradsimon.org]</ref>
   
==External links==
+
Damage to the mammillary bodies due to [[thiamine]] deficiency is implied in pathogenesis of [[Wernicke-Korsakoff syndrome]]. Symptoms include impaired [[memory]], also called [[anterograde amnesia]], suggesting that the mammillary bodies may be important for memory. Lesions of the medial dorsal and anterior nuclei of the thalami and lesions of the mammillary bodies are commonly involved in [[Amnesia|amnesic]] syndromes in humans.<ref>{{cite journal |author=Duprez T, Serieh B, Raftopoulos C |title=Absence of memory dysfunction after bilateral mammillary body and mammillothalamic tract electrode implantation: preliminary experience in three patients |journal=AJNR. American journal of neuroradiology |volume=26 |issue=1 |pages=195–7; author reply 197–8 |date=1 January 2005|pmid=15661728 |url=http://www.ajnr.org/cgi/content/full/26/1/195 }}</ref>
   
*[http://www.google.com/search?hl=en&q=%22The+mammillary+bodies%3A+two+memory+systems+in+one%3F%22&btnG=Google+Search ''The mammillary bodies: two memory systems in one?''] (was broken link to http://cmbi.bjmu.edu.cn/view/0401/1040.PDF)
+
==Additional images==
*http://www.thefreedictionary.com/mammillary%20body
+
<gallery>
*http://www.conradsimon.org/AuditorySystem.shtml
+
Image:Constudoverbrain.gif|Brain
  +
Image:Human brainstem anterior view 2 description.JPG|Human brainstem anterior view
  +
Image:Gehirn, basal - beschriftet lat.svg|Basal view of a human brain
  +
Image:Mammillary body.gif|Mammillary body shown in red(animation)
  +
</gallery>
  +
  +
==References==
  +
<references/>
  +
  +
==External links==
  +
* {{cite journal |author=Vann S, Aggleton J |title=The mammillary bodies: two memory systems in one? |journal=Nat. Rev. Neurosci. |volume=5 |issue=1 |pages=35–44 |year=2004 |pmid=14708002 |url=http://www.cf.ac.uk/psych/resources/vann2004.pdf |doi=10.1038/nrn1299 |unused_data=|<sup>[http://scholar.google.co.uk/scholar?hl=en&lr=&q=intitle%3AThe+mammillary+bodies%3A+two+memory+systems+in+one%3F&as_publication=Nat.+Rev.+Neurosci.&as_ylo=2004&as_yhi=2004&btnG=Search Scholar search]</sup>}}
  +
* [http://www.thefreedictionary.com/mammillary%20body TheFreeDictionary.com] - 'Mammillary body'
  +
* {{RocheLexicon|13048.000-3}}
   
{{Limbic system}}
 
 
{{Diencephalon}}
 
{{Diencephalon}}
  +
{{Papez circuit}}
   
  +
{{DEFAULTSORT:Mammillary Body}}
 
[[Category:Limbic system]]
 
[[Category:Limbic system]]
   
[[de:Corpus mamillare]]
 
{{BioPsy}}
 
   
  +
<!--
  +
[[de:Corpus mamillare]]
  +
[[fr:Corps mamillaires]]
  +
[[pl:Ciało suteczkowate]]
  +
-->
 
{{enWP|Mammillary body}}
 
{{enWP|Mammillary body}}

Latest revision as of 11:40, April 9, 2010

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |

Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)


Brain: Mammillary body
Gray1180
The hypophysis cerebri in position. Shown in sagittal section. (Label "corpus mamillare" at right.)
Gray718
Coronal section of brain through intermediate mass of third ventricle. (Label "corpus mamillare" at bottom.)
Latin corpus mamillare
Gray's subject #188 813
Part of Midbrain
Components medial mammillary nucleus
lateral mammillary nucleus
Artery
Vein
BrainInfo/UW hier-395
MeSH A08.186.211.730.385.357.362.500

The mammillary bodies (mamillary bodies) are a pair of small round bodies, located on the undersurface of the brain, that form part of the limbic system. They are located at the ends of the anterior arches of the fornix. They consist of two groups of nuclei, the medial mammillary nuclei and the lateral mammillary nuclei.[1]
Neuroanatomists have often categorized the mammillary bodies as part of the hypothalamus.[2]

ConnectionsEdit

They are connected to other parts of the brain (as shown in the schematic, below left), and act as a relay for impulses coming from the amygdalae and hippocampi, via the mamillo-thalamic tract to the thalamus.

This circuit, from amygdalae to mammillary bodies, and then on to the thalamus, is part of the larger 'Papez circuit'.

FunctionEdit

They, along with the anterior and dorsomedial nuclei in the thalamus, are involved with the processing of recognition memory.

They are believed to add the element of smell to memories.

PathologyEdit

The mammillary bodies are parts of the brain known to be significantly damaged by untreated Obstructive Sleep Apnea Hypoxia,and associated with deficiency of thiamine. Researchers, in 2008, also noted visible abnormalities in the mammillary bodies of individuals with Obstructive Sleep Apnea.[3]

Damage to the mammillary bodies due to thiamine deficiency is implied in pathogenesis of Wernicke-Korsakoff syndrome. Symptoms include impaired memory, also called anterograde amnesia, suggesting that the mammillary bodies may be important for memory. Lesions of the medial dorsal and anterior nuclei of the thalami and lesions of the mammillary bodies are commonly involved in amnesic syndromes in humans.[4]

Additional imagesEdit

ReferencesEdit

  1. http://www.cf.ac.uk/psych/resources/vann2004.pdf Reference for the two groups of nuclei (not for the text before).
  2. M.B. Carpenter and J. Sutin: Human Neuroanatomy (8th edition) 1983
  3. - "The Auditory System: Anatomy and Maturation" at www.conradsimon.org
  4. Duprez T, Serieh B, Raftopoulos C (1 January 2005). Absence of memory dysfunction after bilateral mammillary body and mammillothalamic tract electrode implantation: preliminary experience in three patients. AJNR. American journal of neuroradiology 26 (1): 195–7; author reply 197–8.

External linksEdit


Template:Papez circuit


This page uses Creative Commons Licensed content from Wikipedia (view authors).

Around Wikia's network

Random Wiki