Trigeminal motor nucleus

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]

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
Latinnucleus motorius nervi trigemini
MeSHD066266
NeuroNames559
NeuroLex IDbirnlex_1222
TA98A14.1.05.410
TA25940
FMA54562
Anatomical terms of neuroanatomy

Lesion

The trigeminal motor nucleus forms the efferent pathway of the jaw jerk reflex. Since the axons involved in this reflex do not decussate, a lesion involving the trigeminal motor nucleus would cause ipsilateral hemiparesis.

References


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