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Front 1

TRIGEMINAL NERVE
MAXILLARY NERVE
ZYGOMATIC NERVE

Back 1

8. Zygomatic nerve

a. Enters the orbit through the inferior orbital fissure and divides into
the zygomaticofacial and zygomaticotemporal nerves

b. Zygomaticofacial nerve: enters a zygomatico-orbital foramen and
emerges from the zygomaticofacial foramen to supply the skin over-
lying the lateral surface of the zygomatic bone

c. Zygomaticotemporal nerve: gives off a branch containing postgan-
glionic parasympathetic secretomotor fibers from the pterygopalatine
ganglion to the lacrimal nerve; it then enters a zygomatico-orbital
foramen and emerges from the zygomaticotemporal foramen to sup-
ply the skin of the anterior part of the temple

Front 2

TRIGEMINAL NERVE
MAXILLARY NERVE
PHARYNGEAL BRANCH

Back 2

9. Pharyngeal branch: courses posteriorly through the palatovaginal ca-
nal and provides sensory innervation to the mucosa of the nasopharynx

Front 3

MANDIBULAR NERVE

Back 3

C. Mandibular nerve

1. Emerges through foramen ovale, deep to the lateral pterygoid, and breaks
up into the sensory and motor branches noted below

Front 4

MANDIBULAR NERVE

NERVE TO MEDIAL PTE.

Back 4

C. Mandibular nerve

2. Nerve to the medial pterygoid: gives rise to the nerve to the tensor
tympani and the nerve to the tensor veli palatini, and then penetrates
the deep surface of the medial pterygoid, innervating it

Front 5

MANDIBULAR NERVE

MASSETERIC NERVE

Back 5

C. Mandibular nerve

3. Masseteric nerve: emerges superior to the lateral pterygoid and then
passes laterally through the mandibular notch to supply the masseter

Front 6

MANDIBULAR NERVE

DEEP TEMPORAL NERVES

Back 6

C. Mandibular nerve

4. Deep temporal nerves: the anterior deep temporal and posterior deep
temporal nerves emerge between the two heads of the lateral pterygoid
and superior to the lateral pterygoid, respectively; they ascend in the
temporal fossa and innervate the temporalis

Front 7

MANDIBULAR NERVE

NERVE TO THE LATERAL PTE.

Back 7

C. Mandibular nerve

5. Nerve to the lateral pterygoid: penetrates the deep surface of the lateral
pterygoid, innervating it

Front 8

MANDIBULAR NERVE

BUCCAL NERVE

Back 8

C. Mandibular nerve

6. Buccal nerve: emerges between the two heads of the lateral pterygoid;
some branches supply the skin of the cheek and others penetrate the
buccinator to provide sensory innervation to the mucosa of the cheek

Front 9

MANDIBULAR NERVE

AURICULOTEMPORAL NERVE

Back 9

7. Auriculotemporal nerve

a. Courses posteriorly, deep to the lateral pterygoid; emerges posterior
to the neck of the mandible and gives off postganglionic parasympa-
thetic secretomotor fibers from the otic ganglion to the facial nerve

b. Ascends between the auricle and superficial temporal artery and pro-
vides sensory innervation to the auricle, external acoustic meatus,
tympanic membrane, and posterior part of the temple