Mesencephalic nucleus of trigeminal nerve

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Brain: Mesencephalic nucleus of trigeminal nerve
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
Dorlands/Elsevier n_11/12581865

The mesencephalic nucleus is involved with proprioception, 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 jaw, and sending projections to the motor trigeminal nucleus to mediate monosynaptic jaw reflexes.

See also

References

  1. ^ Baker R, Llinás R (1971). "Electrotonic coupling between neurones in the rat mesencephalic nucleus". J. Physiol. (Lond.) 212 (1): 45-63. PMID 5545184. 

External links

v • d • e
Brain: mesencephalon (midbrain)
Tectum (Dorsal)
Peduncle (Ventral)
Peduncle base
v • d • e
Nerves of head and neck: the cranial nerves and nuclei
olfactory (AON->I)
optic (LGN->II)
oculomotor (ON,EWN->III)
trochlear (TN->IV)
no significant branches
trigeminal (PSN,TSN,MN,TMN->V)
abducens (AN->VI)
no significant branches
facial (FMN,SN,SSN->VII)
near origin
vestibulocochlear (VN,CN->VIII)
glossopharyngeal (NA,ISN,SN->IX)
ganglia (superior, inferior)
vagus (NA,DNVN,SN->X)
ganglia (superior, inferior)
accessory (NA,SAN->XI)
hypoglossal (HN->XII)

Wikipedia content modification information:

  • This page was last modified on 1 May 2008, at 04:38.

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