| 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 | D066266 |
| NeuroNames | 559 |
| NeuroLex ID | birnlex_1222 |
| TA98 | A14.1.05.410 |
| TA2 | 5940 |
| FMA | 54562 |
| Anatomical terms of neuroanatomy | |
Thetrigeminal motor nucleus containsmotor neurons that innervate muscles of thefirst branchial arch, namely the muscles ofmastication, thetensor tympani,tensor veli palatini,mylohyoid, and anterior belly of thedigastric.[1] It is situated in the upperpons, inferior to the lateral part of the floor of thefourth ventricle.[2]
The trigeminal motor nucleus forms the efferent pathway of thejaw jerk reflex. Since the axons involved in this reflex do not decussate, a lesion involving the trigeminal motor nucleus would causeipsilateral hemiparesis.
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