Deep temporal nerves
From Wikipedia, the free encyclopedia
The deep temporal nerves are motor branches of the mandibular nerve (CN V3).[1] They originate in the infratemporal region and ascend deep to the temporalis muscle.[2] These nerves provide motor innervation to the temporalis muscle, which elevates the mandible during chewing.[3] The deep temporal nerves are relevant in surgical procedures and conditions affecting the infratemporal fossa and temporalis muscle.[4]
| Deep temporal nerves | |
|---|---|
Mandibular division of the trigeminal nerve | |
| Details | |
| From | Anterior division of mandibular nerve |
| Innervates | Temporalis, temporomandibular joint |
| Identifiers | |
| Latin | nervi temporales profundi |
| TA98 | A14.2.01.071 |
| TA2 | 6254 |
| FMA | 53187 |
| Anatomical terms of neuroanatomy | |
Structure
Origin
They usually arise from (the anterior division of) the mandibular nerve (CN V3).[5][6]
Course
They pass superior to the superior border of the lateral pterygoid muscle.[5] They ascend to the temporal fossa[citation needed] and enter the deep surface of the temporalis muscle.[6]
Distribution
The deep temporal nerves provide motor innervation to the temporalis muscle. The deep temporal nerves also have articular branches which provide a minor contribution to the innervation of the temporomandibular joint.[7]
Variation
Number
There are usually two deep temporal nerves - the anterior deep temporal nerve and posterior deep temporal nerve. Occasionally, a third one is present - the middle deep temporal nerve.[6]
Origin
The anterior one may arise from the buccal nerve, and the posterior one may arise from the masseteric nerve.[6]
