tegmentum


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Related to tegmentum: tegmentum of midbrain

tegmentum

 [teg-men´tum] (L.)
1. a covering.
2. tegmentum mesencephali. adj., adj tegmen´tal.
tegmentum mesence´phali (tegmentum of mesencephalon) the posterior part of the mesencephalon, formed by continuation of the posterior parts of the cerebral peduncles across the median plane, and extending on each side from the substantia nigra to the level of the mesencephalic aqueduct. Called also tegmentum.

teg·men·tum

, pl.

teg·men·ta

(teg-men'tŭm, -tă),
1. A covering structure.
[L. covering structure, fr. tego, to cover]

tegmentum

/teg·men·tum/ (-tum) pl. tegmen´ta   [L.]
1. a covering.
3. the dorsal part of each cerebral peduncle.

tegmentum of mesencephalon  the dorsal part of the mesencephalon, formed by continuation of the dorsal parts of the cerebral peduncles across the median plane, and extending on each side from the substantia nigra to the level of the mesencephalic aqueduct.

tegmentum

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

teg·men′tal (-təl) adj.

teg·men·tum

, pl. tegmenta (teg-men'tŭm, -tă) [TA]
1. A covering structure.
2. [TA]
Synonym(s): mesencephalic tegmentum.
[L. covering structure, fr. tego, to cover]

tegmentum

pl. tegmenta [L.] a covering.

mesencephalic tegmentum
part of the mesencephalon, the midbrain; contains the motor nuclei of the oculomotor and trochlear nerves, the red nucleus and the reticular formation.
References in periodicals archive ?
The species is similar to Leptochiton serenae Dell'Angelo, Piccioli Resta & Bonfitto, 2007 from the Lower Pleistocene of southern Italy, which shows a more stressed sculpture pattern shaped by granules developed obliquely from the tegmentum, but a different tail valve shape (i.
A magnetic resonance imaging (MRI) scan revealed T2 hypointense lesion involving right side of tegmentum of pons with extension to superior cerebellar peduncle and vermis with postcontrast enhancement and perilesional oedema (Figure 1).
it has been shown that fever causes necrotizing encephalopathy affecting the thalamus, hypothalamus, brainstem tegmentum, cerebral white matter, and cerebellum (16).
Significant data support that virtually every abused drug can induce behavioral reinforcing properties by altering function in brain dopamine circuits, arising from the ventral tegmentum in the midbrain.
The fascicular axons of the 6th nerve leave the nucleus and travel through the pontine tegmentum in an anterior and caudal direction, intersecting descending cortico-spinal axons of the pyramidal tract, before emerging at the junction between the pons and medulla, immediately lateral to the pyramidal axon bundles.
Types of memory or attention, Impaiments alter lesions of the hippocampus and limbic ventral tegmentum.
El metencefalo (constituido por dos estructuras: el cerebelo y la protuberancia) junto con el mielencefalo, conforman el cerebro posterior o romboencefalo son de vital importancia en la capacidad para controlar los movimientos y adaptarlos a las diferentes circunstancias y, a su vez, el mesencefalo (constituido por el sistema reticular activador, y conocido como cerebro medio) desde la funcion del tegmentum, la sustancia negra y el nucleo rojo, se considera esencial en el desarrollo general del sistema sensomotor.
Multipotent neural stem cells from the adult tegmentum with dopaminergic potential develop essential properties of functional neurons.
Their findings suggest that a small group of neurons near the base of the brain, in the mesopontine tegmentum, has executive control over the alert status of the entire cerebrum and spinal cord, and can generate loss of pain sensation, postural collapse, and loss of consciousness through specific neural circuitry.
Structures arising from the mesencephalon are the superior and inferior colliculi of the tectum, cerebral peduncles, optic lobes, optic tectum, tegmentum and somatic motor neurons of cranial nerves III and IV.
The plates are composed of calcium carbonate and are composed of three layers, outer or dorsal tegmentum, articulamentum, and ventral hypostracum.