Cranial Nerve

Question 1

Cranial Nerve

Answer 1

• Originate brain stem NOT SPINAL CORD
  •Separate afferent and efferent fibres
  –Different spinal nerves
  •Supply pharyngeal arches
  –Develop tissue of face

Question 2

Cranial Nerve 12

Answer 2

1.Olfactory
2.Optic
3.Oculomotor
4.Trochlear
5.Trigeminal
6.Abducent
7.Facial
8.Auditory
9.Glossopharyngeal
10.Vagus
11.Accessory
12.Hypoglossal

Question 3

Cranial Nerve Function

Answer 3

1.Sensory
2.Motor
3.Secretory

Question 4

5th – Trigeminal Nerve

Answer 4

• Largest
  •Sensory – face and scalp
  •3 divisions:
  1.Ophthalmic
  2.Maxillary
  3.Mandibular

Question 5

V – Maxillary division

Answer 5

•Sensory only
•Proprioception
•PDL
•Four branches:
1.Pterygopalatine
2.Posterior superior alveolar
3.Infra-orbital
4.Zygomatic
Upper teeth
–Anterior Superior Alveolar
–Posterior Superior Alveolar
–(Middle Superior Alveolar)
•Hard palate
–Nasopalatine
–Greater palatine

Question 6

V – Mandibular branch

Answer 6

Lingual
1.FOM
2.Ant tongue
3.Lingual gingivae
3.Inferior Alveolar
1.Mental- mini screw
2.Incisive

Question 7

V - Tensor veli palatini

Answer 7

Aids elevation of soft palate
•Levator veli palatini

•Disrupted:
–Cleft palate
–Submucous Cleft Palate
–Syndromes
–Developmental delay

Question 8

7th (VII) – Facial Nerve

Answer 8

Efferent fibres:
–Sensory:
•Taste ant 2/3 tongue
•Post 2/3 (Glossopharyngeal IX)

•Afferent fibres:
–Motor:
•Facial expression ms

–Secretory:
•Expression sublingual and submandibular gland

Question 9

Taste

Answer 9

9000 taste buds
1.Sour (Acid)
2.Sweet
3.Salty
4.Bitter
5.Umami
Experience
Smell
Spicy/cooling/dry sensations
Bell’s palsy

Question 10

12th XII - Hypoglossal

Answer 10

•Tongue movement
•All ms of tongue
•Bonding
–Moisture control