Zygomaticotemporal nerve

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Zygomaticotemporal nerve
Gray778.png
Distribution of the maxillary and mandibular nerves and the submaxillary ganglion
Details
From Maxillary nerve
InnervatesSkin on side of forehead
Identifiers
Latin ramus zygomaticotemporalis nervi zygomatici
TA98 A14.2.01.057
TA2 6232
FMA 52972
Anatomical terms of neuroanatomy

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).

Contents

Structure

Origin

The zygomaticotemporal nerve is a branch of the zygomatic nerve. [2] : 496 

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. [1]

In the temporal fossa, it passes superior-ward [5] between the two layers of the temporal fascia, [2] : 357  between the temporal bone and temporalis muscle. It pierces the temporal fascia about 2 cm superior to the zygomatic arch. [1]

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. [1]

Distribution

The nerve provides sensory innervation to a small area of skin [2] : 354  over the temple [1] [2] : 354, 356  superior to the zygomatic arch. [2] : 496 

Communications

The zygomaticotemporal nerve communicates with the facial nerve (CN VII) (in most individuals [6] ), [1] [6] the lacrimal nerve (a branch of the ophthalmic nerve (CN V1)), [2] : 495  and the auriculotemporal nerve (a branch of the mandibular nerve (CN V3)). [1]

Variation

Sometimes, the zygomaticotemporal nerve replaces the lacrimal nerve and vice versa. [1]

References

PD-icon.svgThis article incorporates text in the public domain from page 889 of the 20th edition of Gray's Anatomy (1918)

  1. 1 2 3 4 5 6 7 8 Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 631. ISBN   978-0-7020-7707-4. OCLC   1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  2. 1 2 3 4 5 6 7 8 9 10 Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). Elsevier Australia. ISBN   978-0-7295-3752-0.
  3. ↑ Tubbs, R. Shane; Mortazavi, Martin M.; Shoja, Mohammadali M.; Loukas, Marios; Cohen-Gadol, Aaron A. (2012). "The Zygomaticotemporal Nerve and Its Relevance to Neurosurgery" . World Neurosurgery. 78 (5): 515–518. doi:10.1016/j.wneu.2011.09.028.
  4. ↑ Rea, Paul (2016). "2 - Head". Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck. Academic Press. pp. 21–130. doi:10.1016/B978-0-12-803633-4.00002-8. ISBN   978-0-12-803633-4.
  5. ↑ Totonchi, Ali; Pashmini, Nazly; Guyuron, Bahman (January 2005). "The Zygomaticotemporal Branch of the Trigeminal Nerve: An Anatomical Study" . Plastic and Reconstructive Surgery . 115 (1): 273–277. doi:10.1097/01.PRS.0000145639.42257.4F. ISSN   0032-1052. PMID   15622263. S2CID   2241737.
  6. 1 2 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. 65 (9): 1188–1192. doi:10.1016/j.bjps.2012.03.033. ISSN   1748-6815. PMID   22578790.
  7. ↑ Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). New York. p. 782. ISBN   978-0-7020-7707-4. OCLC   1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
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