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 | |
Structure
editThe 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
editThe 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
editThe zygomatic branches of the facial nerve supply part of the orbicularis oculi muscle.[2] This is used to close the eyelid.[2]
Clinical significance
editTesting
editTo 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
editRarely, the zygomatic branches of the facial nerve may be damaged during surgery on the temporomandibular joint (TMJ).[5]
Additional images
edit-
Lateral head anatomy detail -
Lateral head anatomy detail.Dissection the newborn -
Lateral head anatomy detail.Facial nerve dissection.
See also
editReferences
edit
This article incorporates text in the public domain from page 905 of the 20th edition of Gray's Anatomy (1918)
- ^ a b 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.
- ^ a b c d 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.
- ^ a b 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.
- ^ 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.
- ^ 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
edit- 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
