[3] The zygomatic branches of the facial nerve supply part of the orbicularis oculi muscle.

[2] To test the zygomatic branches of the facial nerve, a patient is asked to close their eyes tightly.

[2] The zygomatic branches of the facial nerve may be recorded and stimulated with an electrode.

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

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