Cranial nerves - facial

Question 1

Which segment and arch does the facial nerve supply?

Answer 1

Segment 3

Pharyngeal arch 2

Question 2

What type of fibres does the facial nerve have?

Answer 2

SA
AA
AE
SVE

Question 3

What is the role of the AA fibres for the facial nerve?

Answer 3

• Taste from rostral 2/3rds of tongue (chorda tympani)

- Taste from palate

Question 4

Which fibres are involved in the movement of muscles for facial expression?

Answer 4

SVE fibres

Question 5

What are the cheek muscles called?

Answer 5

Buccinator muscles

Question 6

What are the 3 essential lip muscles with their functions?

Answer 6

Closer = orbicularis oris
Lift upper lip = levator labii
Depress lower lip = depressor labii

Question 7

What is the name of the media muscles that is an extra lifter of the eyelid?

Answer 7

Levator anguli oculis

Question 8

What is the function of the cervicoauricularis muscles?

Answer 8

Pulls eat back and rotates ear outwards

Question 9

Which branch of the facial nerve innervates the nostril, lip and cheek muscles?

Answer 9

Dorsal and ventral branches of the buccal nerve

Question 10

Which eyelid muscle is innervated by the occulomotor nerve instead of the facial nerve?

Answer 10

Levator palpebrae superioris

Question 11

What is ptosis?

Answer 11

Drooping of the upper eyelid