Trigeminal Motor Nucleus
- Forms efferent pathway of jaw jerk reflex
- Lesion in trigeminal motor nucleus causes ipsilateral hemiparesis
- Located in the pons
- Part of the trigeminal nerve
- Important in motor control of the jaw muscles
Jaw Jerk Reflex
- Reflex involves axons that do not decussate
- Triggered by tapping the jaw
- Provides information about the integrity of the trigeminal motor nucleus
- Abnormal reflex may indicate a lesion in the trigeminal motor nucleus
- Important for assessing motor function in the jaw muscles
Cranial Nerve Nuclei
- Trigeminal motor nucleus is one of the cranial nerve nuclei
- Located in the brainstem
- Responsible for motor control of the jaw muscles
- Plays a role in various reflexes involving the trigeminal nerve
- Damage to cranial nerve nuclei can lead to motor deficits in the corresponding cranial nerves
Expansion of Neuroanatomy Article
- Neuroanatomy article on trigeminal motor nucleus is a stub
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- More information can be added about the function and clinical significance of the trigeminal motor nucleus
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References
- Brainstem Nuclei of the Cranial Nerves at wustl.edu
- Sinnatamby, Chummy S. (2011). Lasts Anatomy (12th ed.). p.478. ISBN978-0-7295-3752-0.
- Neuroanatomy article is a stub
- Retrieved from https://en.wikipedia.org/w/index.php?title=Trigeminal_motor_nucleus&oldid=1159254472
- Categories: Cranial nerve nuclei, Trigeminal nerve, Pons, Neuroanatomy stubs
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. It is situated in the upper pons, inferior to the lateral part of the floor of the fourth ventricle.
| 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 | |
