Zygomaticotemporal nerve explained

Zygomaticotemporal nerve
Latin:ramus zygomaticotemporalis nervi zygomatici
Innervates:Skin on side of forehead
Branchfrom:Maxillary nerve

The zygomaticotemporal nerve (zygomaticotemporal branch, temporal branch) is a cutaneous (sensory) nerve of the head.[1] It is a branch of the zygomatic nerve (itself a branch of the maxillary nerve (CN V2)). It arises in the orbit and exits the orbit through the zygomaticotemporal foramen in the zygomatic bone to enter the temporal fossa. It is distributed to the skin of the side of the forehead. It also contains a parasympathetic secretomotor component for the lacrimal gland which it confers to the lacrimal nerve (which then delivers it to the gland).

Structure

Origin

The zygomaticotemporal nerve is a branch of the zygomatic nerve.[2]

Course

It passes along the lateral wall of the orbit in a groove in the zygomatic bone.[3]

It passes through the zygomaticotemporal foramen of the zygomatic bone[4] to emerge (at the anterior portion of) the temporal fossa.

In the temporal fossa, it passes superior-ward[5] between the two layers of the temporal fascia, between the temporal bone and temporalis muscle. It pierces the temporal fascia about 2 cm superior to the zygomatic arch.

As it pierces the deep layer of temporal fascia, it issues a small branch which runs between the two layers of the temporalis fascia to the lateral angle of the orbit.

Distribution

The nerve provides sensory innervation to a small area of skin over the temple superior to the zygomatic arch.

Communications

The zygomaticotemporal nerve communicates with the facial nerve (CN VII) (in most individuals),[6] the lacrimal nerve (a branch of the ophthalmic nerve (CN V1)), and the auriculotemporal nerve (a branch of the mandibular nerve (CN V3)).

Variation

Sometimes, the zygomaticotemporal nerve replaces the lacrimal nerve and vice versa.

References

  1. Book: Standring, Susan . Gray's Anatomy: The Anatomical Basis of Clinical Practice . 2020 . 978-0-7020-7707-4 . 42th . New York . 631 . 1201341621.
  2. Book: Sinnatamby, Chummy S. . Last's Anatomy . Elsevier Australia. 2011 . 978-0-7295-3752-0 . 12th .
  3. Tubbs . R. Shane . Mortazavi . Martin M. . Shoja . Mohammadali M. . Loukas . Marios . Cohen-Gadol . Aaron A. . The Zygomaticotemporal Nerve and Its Relevance to Neurosurgery . World Neurosurgery . en . 78 . 5 . 515–518 . 10.1016/j.wneu.2011.09.028.
  4. Book: Rea, Paul . Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck . . 2016 . 978-0-12-803633-4 . 21–130 . en . 2 - Head . 10.1016/B978-0-12-803633-4.00002-8 . https://www.sciencedirect.com/science/article/pii/B9780128036334000028.
  5. Totonchi . Ali . Pashmini . Nazly . Guyuron . Bahman . January 2005 . The Zygomaticotemporal Branch of the Trigeminal Nerve: An Anatomical Study . . en-US . 115 . 1 . 273–277 . 10.1097/01.PRS.0000145639.42257.4F . 0032-1052 . 15622263 . 2241737.
  6. Odobescu . A. . Williams . H. B. . Gilardino . M. S. . 2012-09-01 . Description of a communication between the facial and zygomaticotemporal nerves . Journal of Plastic, Reconstructive & Aesthetic Surgery . en . 65 . 9 . 1188–1192 . 10.1016/j.bjps.2012.03.033 . 1748-6815 . 22578790.
  7. Book: Standring, Susan . Gray's Anatomy: The Anatomical Basis of Clinical Practice . 2020 . 978-0-7020-7707-4 . 42nd . New York . 782 . 1201341621.

External links

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Zygomaticotemporal nerve".

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