Mesencephalic nucleus of trigeminal nerve

Mesencephalic nucleus of trigeminal nerve
Brain: Mesencephalic nucleus of trigeminal nerve
Gray696.png
The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at "V".)
Latin nucleus mesencephalicus nervi trigemini
Gray's subject #187 787
NeuroNames hier-550
MeSH Trigeminal+nuclei
NeuroLex ID birnlex_1010

The mesencephalic nucleus is involved with proprioception of the face, that is, the feeling of position of the muscles. Unlike many nuclei within the CNS, the mesencephalic nucleus contains no chemical synapses but are electrically coupled.[1] Instead, neurons of this nucleus are pseudounipolar cells receiving proprioceptive information from the mandible, and sending projections to the motor trigeminal nucleus to mediate monosynaptic jaw jerk reflexes. It is also the only structure in the CNS to contain the cell bodies of a primary afferent, which are usually contained within ganglia (like the trigeminal ganglion).

See also

References

External links


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • nucleus of mesencephalic tract of trigeminal nerve — mesencephalic trigeminal nucleus, mesencephalic nucleus of trigeminal nerve n. mesencephalicus nervi trigemini …   Medical dictionary

  • Trigeminal nerve — Nerve: Trigeminal nerve Trigeminal nerve, shown in yellow …   Wikipedia

  • Trigeminal nerve nuclei — Brain: Trigeminal nerve nuclei The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at V .) Latin nuclei trigemini Gray s …   Wikipedia

  • Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …   Medical dictionary

  • nucleus mesencephalicus nervi trigemini — [TA] mesencephalic n. of trigeminal nerve: one of the nuclei of the trigeminal nerve, consisting of a slender column of cells in the lateral central gray matter of the superior part of the fourth ventral and cerebral aqueduct. It is the only… …   Medical dictionary

  • mesencephalic — Relating to the mesencephalon. * * * mes·en·ce·phal·ic .en(t) sə fal ik adj of or relating to the midbrain <the mesencephalic nucleus of the trigeminal nerve> * * * mes·en·ce·phal·ic (mez en″sə falґik) pertaining to the… …   Medical dictionary

  • nucleus caeruleus — [TA] a compact aggregation of pigmented neurons subjacent to the locus caeruleus; it is sometimes considered one of the medial reticular nuclei. Rostrally, it ends in the vicinty of the mesencephalic nucleus of the trigeminal nerve. Written also… …   Medical dictionary

  • Cranial nerve — Nerve: Cranial nerves Inferior view of the brain and brain stem showing cranial nerves. An unlabelled version is here Latin nervus cranialis (plural: nervi cranial …   Wikipedia

  • Cranial nerve nucleus — Brain: Cranial nerve nucleus The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (The olfactory and optic centers are not represented.) Latin nucleus nervi cranialis Gray s …   Wikipedia

  • Edinger-Westphal nucleus — Brain: Edinger Westphal nucleus Section through superior colliculus (unlabeled) showing path of oculomotor nerve. ( Edinger Westphal nucleus is not on diagram, but would be near oculomotor nuclei.) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”