Cranial Nerves

Question 1

What does the Cranial Nerve nr VII innervate

Answer 1

Muscles for facial expression

- BOTH motor and sensor

Question 2

What are the nucleuses of the Facial N.? Ggl?

Answer 2

1. Nucl Motorius N. Facialis
2. Nucl Salvatorius Rostralis
   - canalis pterigoidei, ggl pterygopalatinum
   - Chorda Tympani, Ggl Mandibulare
3. Ggl. Geniculi
   (meatus acusticus int Canalis N, Facialis For.stylomast)
4. Nucl Tractorius Spinalis n. Trigemini
5. Nucl. Tractorius Solitarii rostralis = special sensory

Question 3

Extracranial nerves of the N.Facialis

Answer 3

(After For.Stylomastoideum)

1. N. Auriculais int
2. N. Auricularis caudalis
   - > Plexus auricularis caudalis
3. R.Digastricus
4. Auruculopalpebralis
   - r.temporalis = r.auricularis rostralis
   - r.zygomaticus
5. Plexus Oarotideus
6. R. Buccalis dorsalis et ventralis

Question 4

Intraracranial nerves of the N.Facialis

Answer 4

1. N.Petrosus Major (PARAS)
   - > To ggl. Pterygopalatinum
2. N.Stapedius
3. Chorda Tympani
   - Fiss Petrotympanica
   - -> Ggl Mandibulare

Question 5

Nerves leaving For. Stylomastiodeum

Answer 5

N. Petrosus Major
N. Auricularis Caudalis
n. Auricularis caudalis

Question 6

Which nerve of the facial nerve supply the sensation of taste?

Answer 6

Chorda Tympani (SS, PARAS)

• Gustatory 2/3 of tongue
• Ggl Mandibularis
• Ggl Sublinguale in (ca)
• Runs together with Lingual Nerve of the (V3)

Question 7

The N. auricularis caudalis innervates

Answer 7

M. rotator of ear
to plexus auriculatis caud
- R. Digastricus-> M.digastricus (caud), M.Stylohy (rostr)
- r. parotidei -> Plexus parotideus

Question 8

Where does the Auriculotemporalis run in relation to Auriculopalpebralis

Answer 8

AT: From V3 of Trigeminal N, ventral to zyg.arch
AP: From N.Facialis, dorsal to zyg arch.

Question 9

What are the branches of the Auriculopalpebralis n

Answer 9

R. auricularis Rostralis - Rostral auricular plexus and R.Zygomaticus - M.Orbicularis occuli