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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.


one of the hard protective sometimes hairy or resinous specialized leaves surrounding the buds of certain plantsa part of the brainstem that covers the floor of the midbrain
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The receptors, which are mutated in ADNFLE, are preferentially expressed in the thalamus and mesencephalic tegmentum belongs to the ascending arousal system and in the frontal cortex [108].
In general, mice brains exhibiting H-type [PrP.sup.res] correlated with overall more intensive vacuolation that is pronounced in areas such as the hypothalamus, medial thalamus, and mesencephalic tegmentum (Figure 6).