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 (tĕg-mĕn′təm) Anatomy
1. A covering or integument of an organ or body part.
2. The ventral part of the midbrain.

[Latin tegumentum, tegmentum, covering, from tegere, to cover; see (s)teg- in Indo-European roots.]

teg·men′tal (-təl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


of or relating to the tegmentum
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Injury to tegmental regions of the upper pons and midbrain increases the likelihood of initial disturbances in consciousness, but CT scans completed in the acute stage of injury are limited in their capacity to detect edema or regional infarction in these brain structures.
It connects (amongst others) the ventral tegmental area (VTA) bidirectionally with the nucleus accumbens (NAC) and the medial prefrontal cortex (mPFC).
While analysing the link between physical features of men and their involvement as a father, researchers found that fathers with smaller testicular volume showed better activity in the brain area related to reward and parental motivation - the ventral tegmental area (VTA) while viewing their child's photos.
These cells, which produce the chemical messenger dopamine, nestle in a brain region called the ventral tegmental area, a spot known for handling rewards.
For example, alcohol administration elevates 5-HT levels in the nucleus accumbens, ventral tegmental area (VTA), amygdala, and hippocampus, an effect that is more pronounced in alcohol-preferring rats.
Ademas de lo anterior, el cuerpo estriado dorsal se proyecta sobre el sistema nigroestriado y el cuerpo estriado ventral recibe fibras dopaminergicas desde el area ventral "tegmental".
In the glutamate hypofunction model of psychosis, a GABAB agonist would cause disinhibition of glutamate modulation of mesolimbic dopamine and reversal of GABA transmission in the ventral tegmental area.
The reward system in the brain involves neurons of the prefrontal cortex, nucleus accumbens, amygdala, ventral tegmental area (VTA, a region in the midbrain), the substantia nigra (a thin black layer separating the anterior and posterior portions of the midbrain) and the locus ceruleus (a small blue-hued area on both sides of the upper posterior region of the pons).
The red nucleus and the ipsilateral inferior olivary nucleus are connected via the central tegmental tract, and the dentate nucleus connects to the contralateral red nucleus through the superior cerebellar peduncle.
When discussing the neurobiology that underlies the plastic changes associated with AOD use, Kalivas and O'Brien (2008) focused on the initial release of the neurotransmitter dopamine from cells in the brain region called the ventral tegmental area (VTA) that is induced by addictive drugs.