Innervation of Face (week 2)

Question 0

Nucleus for motor innervation of the face (Facial n. CN VII)

Answer 0

Motor Nucleus of VII (pons)

Question 1

What three branches arise AFTER the Facial nerve (CN VII) exits the stylomastoid foramen?

Answer 1

Auricularis, Occipitalis and Suprahyoid

Question 2

Suprahyoid branch of the Facial nerve innervates what two muscles?

Answer 2

Stylohyoid and Posterior belly of the Digastric muscle

Question 3

What is the final structure CN VII passes through before branching?

Answer 3

Stylomastoid Foramen

Question 4

General Sensation for the face comes from what Cranial Nerve?

Answer 4

Trigeminal (CN V)

Question 5

All of the motor innervation of the face is done by what cranial nerve?

Answer 5

Facial n. (CN VII)

Question 6

What are the three divisions of CN V?

Answer 6

V1 (Opthalmic), V2 (Maxillary), V3 (Mandibular)

Question 7

Sensory cell bodies for General Sensation of the face are found in which ganglion?

Answer 7

Trigeminal Ganglion

Question 8

Where is the location of branching in CN V - V1?

Answer 8

In the Orbit

Question 9

What three main nerves branch from the Opthalmic (V1) nerve in the orbit?

Answer 9

Lacrimal Nerve, Frontal Nerve and Nasociliary Nerve

Question 10

Two smaller branches come from the Frontal nerve. What are they?

Answer 10

Supraorbital nerve and Supratrochlear nerve

Question 11

What nerve branch from V1 of CN V innervates the bridge of the nose?

Answer 11

External Nasal nerve

Question 12

Which nerve branch from V1 of CN V innervates the medial upper eyelid and lacrimal sac?

Answer 12

Infratrochlear nerve

Question 13

The Anterior Ethmoid nerve is a branch from what other branch of V1 from CN V?

Answer 13

Nasociliary nerve

Question 14

What are the two main branches of the Nasociliary nerve from V1 of CN V?

Answer 14

Infratrochlear nerve and Anterior ethmoid nerve

Question 15

What does the Lacrimal nerve branch of V1 (CN V) innervate?

Answer 15

Lateral Upper Eyelid

Question 16

The two nerve branches from the Frontal Nerve branch of V1 innervate the same structures. What are they?

Answer 16

Upper eyelid, Forehead and Scalp

Question 17

As V1 branches off of the Trigeminal Ganglion, what structure does it pass through first?

Answer 17

Cavernous Sinus

Question 18

Just before entering the Orbit, V1 of CN V passes through what structure?

Answer 18

Superior Orbital Fissure

Question 19

What is the smaller nerve branch off of the Anterior Ethmoid nerve that innervates the bridge of the nose?

Answer 19

External nasal nerve

Question 20

Nerve branches from V2 in what space?

Answer 20

Pterygopalatine Fossa

Question 21

Two branches of V2 in Pterygopalatine Fossa

Answer 21

Zygomatic and Infraorbital nerve

Question 22

Zygomatic nerve enters what space after it branches off of V2

Answer 22

Inferior Orbital Fissue –> Orbit

Question 23

Zygomatic branch of V2 gives off two smaller branches. What are they

Answer 23

Zygomaticotemporal and Zygomaticofacial

Question 24

Zygomaticofacial Nerve supplies general sensation to what?

Answer 24

Skin over zygomatic arch

Question 25

Infraorbital nerve gives off what three branches as it exits the infraorbital foramen

Answer 25

Inferior Palpebral, Lateral nasal and Superior Labial

Question 26

Zygomaticotemporal nerve supplies general sensation to what?

Answer 26

Skin over anterior temple

Question 27

V3 branches into what two trunks in what space?

Answer 27

Anterior and Posterior trunks, Infratemporal Fossa

Question 28

What nerve comes off of the Anterior Trunk of V3

Answer 28

Buccal Nerve

Question 29

What nerve comes off of the Posterior Trunk of V3

Answer 29

Auriculotemporal nerve

Question 30

What nerve supplies general sensation to the Cheek and Mandibular buccal gingiva

Answer 30

Buccal nerve

Question 31

After the trunk branching, V3 continues on as what nerve?

Answer 31

Inferior Alveolar Nerve

Question 32

Inferior Alveolar nerve enters what foramen as it passes through the mandible

Answer 32

Mandibular Foramen

Question 33

V3 finally terminates as it exits the mental foramen as what nerve?

Answer 33

The mental nerve

Question 34

Mental nerve supplies general sensation to what structures?

Answer 34

Chin
Lower Lip
Labial Gingiva

Question 35

What nerve supplies general sensation to the Auricle, Skin of temple and lateral scalp?

Answer 35

Auriculotemporal nerve