Oral Cavity

Question 1

Sensory supply of the roof? floor? and cheek?

Answer 1

Root:
- via greater and nasopalatine nerves branches of mandibular
Floor:
- lingual nerve (mandibular)
Cheek:
- buccal (mandibular)

Question 2

Motor supply of the buccinator and orbicularis oris?

Answer 2

Via the facial nerve

Question 3

Muscles used for movements of the tongue?

Answer 3

Protrusion:
- genioglossus
Retraction:
- styloglossus and hyoglossus
Depression:
- hyoglossus and genioglossus
Elevation:
- styloglossus and palatoglossus

Question 4

Sensory nerve supply of the tongue - anterior 2/3? posterior 1/3? base? (general and special?)

Answer 4

Anterior:
- general via lingual
- taste via chorda tympani
Posterior:
- general and special via IX
Base:
- general and special via internal laryngeal (X)

Question 5

Motor nerve supply to tongue muscles - extrinsic and intrinsic?

Answer 5

Intrinsic and extrinsic via the hypoglossal nerve but the palatoglossus via the pharyngeal plexus

Question 6

Buccinator - innervation? function?

Answer 6

Buccal branch of facial (sensation)

Keeps food between cheeks when chewing

Question 7

Tensor veli palatini - action? motor supply?

Answer 7

Tenses soft palate

Medial pterygoid of V3

Question 8

Levator veli palatini - action? motor supply?

Answer 8

Raises soft palate

Pharyngeal plexus

Question 9

Musculus uvulae - action? motor supply?

Answer 9

Elevates uvula

Pharyngeal plexus

Question 10

Palatoglossus - action? motor supply?

Answer 10

Pulls root of tongue narrowing oropharyngeal isthmus

Pharyngeal plexus

Question 11

Palatopharyngeus - action? motor supply?

Answer 11

Elevates wall of pharynx

Pharyngeal plexus

Question 12

Name the 3 sensory nerve supply of the palate - glosso?

Answer 12

Greater, lesser and nasopalatine nerve

IX supplies part of soft palate

Question 13

Name the 3 arteries which supply to the palate - branches of?

Answer 13

Greater, lesser and sphenopalatine arteries

Maxillary

Question 14

Name the 3 branches of the maxillary nerve - teeth supply/

Answer 14

Posterior superior - molar
Middle superior - premolar
Anterior superior - canine and incisors

Question 15

Name the 4 tongue taste bud types?

Answer 15

Vallate
Fungiform
Foliate
Filiform