hypoglossal nucleus


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

hypoglossal nucleus

[¦hī·pə¦gläs·əl ′nü·klē·əs]
(neuroscience)
A long nerve nucleus throughout most of the length of the medulla oblongata; cells give rise to the hypoglossal nerve fibers.
Mentioned in ?
References in periodicals archive ?
Distinct basophilic inclusions were seen in frontal, motor, and parietal cortex, red nucleus, hypoglossal nucleus, pontine nuclei, and superior colliculus.
Although, relatively little is known about the motor neurons innervating the intrinsic muscles of the tongue, a recent tract tracing study in Cynomolgus monkey has revealed that motor neurons of the medial divisions of the hypoglossal nucleus innervate tongue muscles that are oriented in planes transverse to the long axis of the tongue, whereas motor neurons of the lateral divisions innervate tongue muscles that are oriented parallel to this axis (Sokoloff & Deacon, 1992).
From there, descending projections are targeted upon the brainstem, particularly on a division of the hypoglossal nucleus (nXIIts), which innervates the vocal organs.