Zygomatic branches of the facial nerve

"Zygomatic branch" redirects here. For the branch of the maxillary nerve, see Zygomatic nerve.

The zygomatic branches of the facial nerve (malar branches) are nerves of the face. They run across the zygomatic bone to the lateral angle of the orbit. Here, they supply the orbicularis oculi muscle, and join with filaments from the lacrimal nerve and the zygomaticofacial branch of the maxillary nerve (CN V₂).

Zygomatic branches of the facial nerve
Plan of the facial and intermediate nerves and their communication with other nerves (labeled at center bottom, fifth from bottom, as "Malar")
The nerves of the scalp, face, and side of neck (zygomatic branches labeled at center, near cheek)
Details
From	Facial nerve
Identifiers
Latin	rami zygomatici nervi facialis
TA98	A14.2.01.110
TA2	6303
FMA	53307
Anatomical terms of neuroanatomy [edit on Wikidata]

Structure

The zygomatic branches of the facial nerve are branches of the facial nerve (CN VII).^[1] They run across the zygomatic bone to the lateral angle of the orbit. This is deep to zygomaticus major muscle.^[1] They send fibres to orbicularis oculi muscle.

Connections

The zygomatic branches of the facial nerve have many nerve connections. Along their course, there may be connections with the buccal branches of the facial nerve.^[2] They join with filaments from the lacrimal nerve and the zygomaticofacial nerve from the maxillary nerve (CN V₂).^[3] They also join with the inferior palpebral nerve and the superior labial nerve, both from the infraorbital nerve.^[3]

Function

The zygomatic branches of the facial nerve supply part of the orbicularis oculi muscle.^[2] This is used to close the eyelid.^[2]

Clinical significance

Testing

To test the zygomatic branches of the facial nerve, a patient is asked to close their eyes tightly.^{[citation needed]} This uses orbicularis oculi muscle.^[2] The zygomatic branches of the facial nerve may be recorded and stimulated with an electrode.^[4]

Surgical damage

Rarely, the zygomatic branches of the facial nerve may be damaged during surgery on the temporomandibular joint (TMJ).^[5]

Additional images

• 
  Lateral head anatomy detail
• 
  Lateral head anatomy detail.Dissection the newborn
• 
  Lateral head anatomy detail.Facial nerve dissection.

See also

• Zygomatic nerve
• Zygomaticus major muscle
• Zygomaticus minor muscle

References

This article incorporates text in the public domain from page 905 of the 20th edition of Gray's Anatomy (1918)

1. Evans, T. William (2017). "80 - Facelift". Maxillofacial Surgery. Vol. 2 (3rd ed.). Churchill Livingstone. pp. 1195–1222. doi:10.1016/B978-0-7020-6056-4.00080-0. ISBN 978-0-7020-6056-4.
2. Niamtu, Joe (2018). "3 - Facelift Surgery (Cervicofacial Rhytidectomy)". Cosmetic Facial Surgery (2nd ed.). Elsevier. pp. 32–187. doi:10.1016/B978-0-323-39393-5.00003-0. ISBN 978-0-323-39393-5.
3. Fillmore, Erin P.; Seifert, Mark F. (2015). "22 - Anatomy of the Trigeminal Nerve". Nerves and Nerve Injuries. Vol. 1: History, Embryology, Anatomy, Imaging, and Diagnostics. Academic Press. pp. 319–350. doi:10.1016/B978-0-12-410390-0.00023-8. ISBN 978-0-12-410390-0.
4. Kennelly, Kathleen D. (2019). "21 - Clinical neurophysiology of cranial nerve disorders". Handbook of Clinical Neurology. Vol. 161. Elsevier. pp. 327–342. doi:10.1016/B978-0-444-64142-7.00058-8. ISBN 978-0-444-64142-7. ISSN 0072-9752. PMID 31307611. S2CID 196813653.
5. McCain, Joseph P.; Kim, King (2012). "6 - Endoscopic Oral and Maxillofacial Surgery". Current Therapy In Oral and Maxillofacial Surgery. Saunders. pp. 31–62. doi:10.1016/B978-1-4160-2527-6.00006-2. ISBN 978-1-4160-2527-6.

External links

• Anatomy photo:23:06-0105 at the SUNY Downstate Medical Center - "Branches of Facial Nerve (CN VII)"
• lesson4 at The Anatomy Lesson by Wesley Norman (Georgetown University) (parotid3)
• cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (VII)
• http://www.dartmouth.edu/~humananatomy/figures/chapter_47/47-5.HTM