Family Friendly & Specialty Dentists in London, UK
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Structure and Connections
- The zygomatic branches of the facial nerve are branches of the facial nerve (CN VII).
- They run across the zygomatic bone to the lateral angle of the orbit, deep to zygomaticus major muscle.
- They send fibers to orbicularis oculi muscle.
- They have connections with the buccal branches of the facial nerve.
- They join with filaments from the lacrimal nerve and the zygomaticofacial nerve from the maxillary nerve (CN V).
- They also join with the inferior palpebral nerve and the superior labial nerve, both from the infraorbital nerve.
Function
- The zygomatic branches of the facial nerve supply part of the orbicularis oculi muscle.
- This muscle is used to close the eyelid.
Clinical significance - Testing
- To test the zygomatic branches of the facial nerve, a patient is asked to close their eyes tightly.
- This test utilizes the orbicularis oculi muscle.
- The zygomatic branches of the facial nerve may be recorded and stimulated with an electrode.
Clinical significance - Surgical damage
- Rarely, the zygomatic branches of the facial nerve may be damaged during surgery on the temporomandibular joint (TMJ).
Additional information
- Lateral head anatomy detail
- Dissection the newborn
- Facial nerve dissection.
- 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).
- 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. ISBN978-0-7020-6056-4.
- 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. ISBN978-0-323-39393-5.
- 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. ISBN978-0-12-410390-0.
- 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. ISBN978-0-444-64142-7. ISSN0072-9752. PMID31307611. S2CID196813653.
