Oral Cavity & Pharynx

Question 1

Name the 2 arches in the oral cavity?

Answer 1

More anteriorly = Palatoglossal arch

Behind = Palatopharyngeal arch

Question 2

All muscles of the tongue are innervated by the hypoglossal nerve except one. What is this muscle and its innervation?

Answer 2

Palatoglossus muscle innervated by the Vagus (X) nerve. Extrinsic muscle.

Question 3

Name the 4 extrinsic muscles of the tongue

Answer 3

Genioglossus, Hypoglossus, Syoglossus and Palatoglossus

Question 4

What does the submandibular gland drain through?

Answer 4

Wharton duct (Base of lingual frenulum)

Question 5

What does the parotid gland drain through?

Answer 5

Stenson duct

Question 6

What is sialolithiasis?

Answer 6

Salivary gland stones

Question 7

Is tonsilitis more commonly bacterial or viral in cause?

Answer 7

Viral

Question 8

Name 3 symptoms of a peritonsillar abscess

Answer 8

Drooling, difficulty opening the mouth, bad breath and fever

Question 9

Name the 3 longitudinal muscles that elevate the pharynx and larynx during swallowing

Answer 9

Stylopharyngeus, palatopharyngeus and salpingopharyngeus

Question 10

What nerve innervates the pharyngeal constrictors?

Answer 10

Vagus (X)

Question 11

Name the 2 parts of the inferior pharyngeal constrictor muscle

Answer 11

Thyropharyngeal and Cricopharyngeal

Question 12

What is Killians Dehiscence?

Answer 12

An area of weakness between the 2 parts of the inferior pharyngeal constrictors that can form a diverticulum

Question 13

What is the nerve supply to the Longitudinal muscles of the Pharynx and larynx?

Answer 13

Stylopharyngeus = CN IX

Palatopharyngeus and Salpingopharyngeus = CN X