Cutaneous nerves of face & scalp

Question 1

Supra-orbital

Answer 1

part of bifurcation of frontal N which is a branch of ophthalmic N (CN V1), emerges via supra-orbital notch
Mucosa of frontal sinus, skin & conjunctiva of middle of superior eyelid, skin and pericranium of anterolateral forehead, scalp to vertex

Question 2

supra-trochlear

Answer 2

bifurcation of frontal N which is a branch of ophthalmic N (CN V1), passes lateral to trochlea
skin & conjunctive of medial aspect of superior eyelid, skin and pericranium of anteromedial forehead

Question 3

Lacrimal

Answer 3

branch of ophthalmic N (CN V1), receives secretomotor fibers (parasympathetic) via communicating branch from zygomaticotemporal N
lacrimal gland (secretomotor fibers), skin and conjunctiva of lateral part of superior eyelid

Question 4

infratrochlear

Answer 4

branch of nasociliary N which is a branch of ophthalmic N (CN V1), follow medial wall of orbit inferior to trochlea
skin to lateral root of nose, skin & conjunctiva of eyelids adjacent to medial canthus, lacrimal sac, and lacrimal caruncle

Question 5

External nasal

Answer 5

branch of anterior ethmoidal N which is a branch of ophthalmic N (CN V1), emerges from nasal cavity by passing between nasal bones & lateral nasal cartilage
skin of nasal ala, vestibule, and dorsum of nose including apex

Question 6

infra-orbital

Answer 6

continuation of maxillary N (CN V2), entrance into orbit via inferior orbital fissure
mucosa of maxillary sinus, premolar canine, incisor maxillary teeth, skin & conjunctiva of inferior eyelid, skin of cheek, lateral nose, and anterior inferior nasal septum, skin and oral mucosa of superior lip

Question 7

zygomaticofacial

Answer 7

branch of zygomatic N which is a branch of maxillary N (CN V2)
skin on prominence of cheek

Question 8

zygomaticotemporal

Answer 8

branch of zygomatic N which is a branch of the maxillary N (CN V2), sends communicating branch to lacrimal N in orbit
hairless skin anterior part of temporal fossa

Question 9

auriculotemporal

Answer 9

branch of mandibular N (CN V3)
skin anterior to auricle and posterior 2/3rds of temporal region, skin of tragus and adjacent helix of aurcile, skin of root of external acoustic meatus, and skin of superior tympanic membrane

Question 10

buccal

Answer 10

branch of mandibular N (CN V3)

skin of oral mucosa of cheek, buccal gingivae (adjacent to 2nd & 3rd molars)

Question 11

mental

Answer 11

terminal branch of inferior alveolar N which is a branch of mandibular N (CN V3)
skin of chin, oral mucosa of inferior lip

Question 12

great auricular

Answer 12

spinal nerves C2 and C3 via cervical plexus

skin overlaying angle of mandible and inferior lobe of auricle, parotid sheath

Question 13

lesser occipital

Answer 13

spinal nerves C2 and C3 via cervical plexus

scalp posterior to auricle