Sensory (afferent) innervation

Question 1

2 main nerves that supply sensory info to face

Answer 1

1. Trigeminal nerve branches (CN 5)

2. Cervical plexus (ansa cervicalis)

Question 2

Trigeminal nerve branches

Answer 2

1. Ophthalmic (V1)-sensory
2. Maxillary (V2)-sensory
3. Mandibular (V3)-sensory and motor(muscles of mastication only!)

Question 3

Ophthalmic branch:

Answer 3

1. Supra-orbital
2. Supratrochlear
3. Infratrochlear
4. Lacrimal
5. External nasal

Question 4

Maxillary branch

Answer 4

1. Infraorbital
2. Zygomaticotemporal
3. Zygomaticofacial

Question 5

Mandibular branch

Answer 5

1. Auriculotemporal
2. Buccal
3. Mental

Question 6

Cervical plexus

Answer 6

Spinal nerves with ant and post rami

Question 7

Ant rami

Answer 7

Great auricular (towards ear)
Lesser occipital (higher and above ear compared to g.a.)

Question 8

Post rami

Answer 8

Greater occipital (C2)
Third occipital (C3)

Question 9

Branches from cervical plexus

Answer 9

1. Lesser occipital C2
2. Great auricular C2,3
3. Transverse cervical C2,3
4. Supraclavicular C3,4