Zygomatic branches of the facial nerve

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
FromFacial nerve
Identifiers
LatinRami zygomatici nervi facialis
TA98A14.2.01.110
TA26303
FMA53307
Anatomical terms of neuroanatomy

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).

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. 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

See also

References

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

  1. 1 2 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. 1 2 3 4 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. 1 2 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.
  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.
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