Trigeminal motor nucleus


Trigeminal motor nucleus

The cranial nerve nuclei schematically represented; dorsal view (posterior). Motor nuclei in red; sensory in blue. (Trigeminal nerve nuclei are at "V".)
Details
Identifiers
Latin nucleus motorius nervi trigemini
MeSH A08.186.211.132.931
NeuroNames hier-551
NeuroLex ID Motor nucleus of trigeminal nerve
TA A14.1.05.410
FMA 54562

Anatomical terms of neuroanatomy

The trigeminal motor nucleus contains motor neurons that innervate muscles of the first branchial arch, namely the muscles of mastication, the tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric. This nucleus is located in the mid-pons (i.e. in the center of the pons going inferior to superior).[1]

Lesion

The trigeminal motor nucleus is primarily involved in the jaw jerk reflex. As the fibers involved in this reflex do not decussate, a lesion involving the trigeminal motor nucleus would cause ipsilateral motor deficits.

References

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