177

Front 1

CUTANEOUS INNERVATION OF THE FACE

Back 1

1. Cutaneous innervation ofthe face is provided by branches ofthe oph-
thalmic, maxillary, and mandibular nerves, the three divisions of the
trigeminal nerve (see also The Cranial Nerves, p. 275)

Front 2

BRANCHES OF THE OPHTHALMIC NERVE

SUPRAORBITAL NERVE

Back 2

2. Branches ofthe ophthalmic nerve

a. Supraorbital nerve: emerges from the supraorbital foramen and ascends
to supply the forehead and the scalp as far posteriorly as the vertex

Front 3

BRANCHES OF THE OPHTHALMIC NERVE

SUPRATROCHLEAR NERVE

Back 3

2. Branches ofthe ophthalmic nerve

b. Supratrochlear nerve: emerges from the frontal notch medial to the su-
praorbital nerve and ascends to supply the forehead near the midline

Front 4

BRANCHES OF THE OPHTHALMIC NERVE

INFRATROCHLEAR NERVE

Back 4

2. Branches ofthe ophthalmic nerve

c. Infratrochlear nerve: emerges from the orbit inferior to the supra-
trochlear nerve and supplies the medial part ofthe upper eyelid

Front 5

BRANCHES OF THE OPHTHALMIC NERVE

EXTERNAL NASAL NERVE

Back 5

2. Branches ofthe ophthalmic nerve

d. External nasal nerve: emerges inferior to the nasal bone to supply
the dorsum and tip ofthe nose

Front 6

BRANCHES OF THE OPHTHALMIC NERVE

LACRIMAL NERVE

Back 6

2. Branches ofthe ophthalmic nerve

e. Lacrimal nerve: emerges along the superolateral border ofthe orbital
aperture to supply the lateral part ofthe upper eyelid

Front 7

BRANCHES OF THE MAXILLARY NERVE

INFRAORBITAL NERVE

Back 7

3. Branches of the maxillary nerve

a. Infraorbital nerve: emerges from the infraorbital foramen and sup-
plies the lower eyelid, side ofthe nose, upper lip, and the skin over-
lying the anterior surface ofthe maxilla