Face

Question 1

What are the branches of the trigeminal nerve?

Answer 1

V1 - Opthalmic
V2 - Maxillary
V3 - Mandibular

Question 2

What cutaneous nerves of the head and neck are derived from C2/3?

Answer 2

Greater Occipital
Lesser Occipital
Greater Auricular

Question 3

What are the branches of the facial nerve?

Answer 3

Posterior Auricular
Temporal
Zygomatic
Buccal
Mandibular
Cervical

Question 4

What nerve(s) provide motor innervation to the muscles of facial expression?

Answer 4

Facial Nerve (CNVII)

Question 5

What nerves provide cutaneous innervation to the head and neck?

Answer 5

Trigeminal Nerve

C2/3

Question 6

Where is the parotid duct located?

Answer 6

From gland it crosses lateral surface of masseter, pierces buccinator m. and feeds into mouth opposite the 2nd upper molar

Question 7

Where does the facial n exit?

Answer 7

Stylomastoid foramen

Question 8

What is the parotid plexus?

Answer 8

Branches of facial n within parotid gland

Question 9

What branch of the facial nerve innervates the buccinators? What muscle does it cross?

Answer 9

Buccal Branch. Crosses superficial to masseter

Question 10

What is the relationship of the masseter and buccinator?

Answer 10

Buccal fad pad is anterior to the masseter. Buccinator deep to the buccal fat pad.

Question 11

What branches of the facial artery occur near the angle of the mouth?

Answer 11

Inferior and superior labial arteries

Question 12

What does V1 innervate?

Answer 12

Ophthalmic division. Skin of forehead, upper eyelids, and nose

Question 13

What does V2 innervate?

Answer 13

Maxillary division. Skin of lower eyelid, cheek, and upper lip

Question 14

What does V3 innervate?

Answer 14

Mandibular division. Skin of lower face and part of the side of head

Question 15

What does C2/3 innervate?

Answer 15

Skin of posterior part of head

Question 16

Where do the facial nerve branches originate (prior to branching?)

Answer 16

Posterior to the parotid (exit the stylomastoid foramen)

Question 17

What two nerves are associated with buccinator muscle?

Answer 17

Buccal branch of facial n. - motor
Buccal nerve (from V3) - sensory to mucosa of cheek and skin of cheek

Question 18

What is the position of the facial artery/vein in relation to the submandibular gland?

Answer 18

A. - deep to submandibular

V. - superficial to submandibular

Question 19

What structures emerge from the mental foramen?

Answer 19

Mental n., a, and v.

Question 20

What n. is the mental n. a branch of? What type of innervation does it supply? What muscle covers it?

Answer 20

1. branch of mandibular (V3) division of trigeminal
2. Supplies sensory to lower lip and chin
3. Covered by depressor anguli otis m.

Question 21

Dental anesthesia is inserted through this structure

Answer 21

Infraorbital foramen

Question 22

What structures emerge from from infraorbital foramen?

Answer 22

Infraorbital n., a., and vein

Question 23

What condition involves the sudden loss of control of muscles of facial expression? What n. is involved? What symptoms would you expect?

Answer 23

1. Bell’s Palsy
2. Facial nerve
3. Drooping of mouth, inability to close eyelid of affected side

Question 24

What are the muscles around the oral opening?

Answer 24

Levator labii superioris – elevates upper lip
Zygomaticus major – draws angle of mouth superiorly and posteriorly
Orbicularis oris – sphincter of mouth
Buccinator – compresses cheek against molar teeth
Depressor anguli oris – depresses angle of mouth

Question 25

What are the sensory nerves of the face?

Answer 25

Branches of trigeminal n. 
Supraorbital n (from V1)
Infraorbital n (from V2)
Mental n (from V3)

Question 26

What is trigeminal neuralgia?

Answer 26

Pain assoc. with aneurysm of superior cerebellar a.

Question 27

What is the danger triangle?

Answer 27

Infections spreading from facial v. to cavernous sinus (via sup. and inf. ophthalmic v.) may cause thrombus, resulted in death before antibiotics

Question 28

What three nerves innervated the skin covering the auricle?

Answer 28

Greater auricular (C2/3), vagus (X), and auriculotemporal nerve (V3)

Question 29

What is the innervation for the upper and lower eyelid muscles?

Answer 29

Upper (CNIII), Lower (CN VII)