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8 Cards in this Set

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FACIAL NERVE

EMERGES FROM?
III. Facial Nerve

A. Emerges from the skull through the stylomastoid foramen and gives off its
posterior auricular branch, which ascends behind the auricle to supply the
auricularis posterior and Occipitalis muscles; here, it also gives off branches
to the posterior belly ofthe digastric and stylohyoid, and receives postgan-
glionic parasympathetic secretomotor fibers from the otic ganglion via the
auriculotemporal nerve
FACIAL NERVE

WHERE DOES IT ENTER?
III. Facial Nerve

B. The facial nerve then enters the parotid gland, supplying it with postgan-
glionic parasympathetic secretomotor fibers as it forms a plexus within its
substance; its major branches emerge along the borders ofthe parotid gland
and are named according to their region of distribution
FACIAL NERVE; BRANCHES

TEMPORAL
III. Facial Nerve

1. Temporal branches (two or three): ascend superficial to the zygomatic
arch and supply Orbicularis oculi, corrugator supercilii, auricularis an-
terior, auricularis superior, and frontalis
FACIAL NERVE; BRANCHES

ZYGOMATIC
III. Facial Nerve

2. Zygomatic branches (two or three): course toward the prominence ofthe
cheek and supply Orbicularis oculi
FACIAL NERVE; BRANCHES

BUCCAL
III. Facial Nerve

3. Buccal branches (two or three): course toward the corner ofthe mouth
and supply Orbicularis oris, risorius, buccinator, Zygomaticus major,
Zygomaticus minor, levator labii superioris, levator labii superioris
alaeque nasi, levator anguli oris, depressor septi, nasalis, and procerus
FACIAL NERVE; BRANCHES

MARGINAL MANDIBULAR
III. Facial Nerve

4. Marginal mandibular branch: courses anteriorly above the inferior bor-
der of the mandible and supplies depressor anguli oris, depressor labii
inferioris, mentalis, and Orbicularis oris
FACIAL NERVE; BRANCHES

CERVICAL BRANCH
III. Facial Nerve

5. Cervical branch: descends anteriorly, inferior to the angle ofthe man-
dible, and supplies the platysma
FACIAL NERVE

WITHIN THE SUPERFICIAL FASCIA...
III. Facial Nerve

C. Within the superficial fascia ofthe face, branches ofthe facial nerve anas-
tomose with each other and with cutaneous branches of the ophthalmic,
maxillary, and mandibular nerves