Oral Cavity and Oropharynx

Question 1

Muscles that bridge the mandible and the hyloid bone

Answer 1

Mylohyoid and geniohyloid muscles

Question 2

Regions of the tongue

Answer 2

The sulcus terminalis (divides A and P), foramen caecem, lingual tonsils and puppilae

Question 3

Types of pupillae

Answer 3

Fungiform (widespread), foliate (lateral) and valate (posterior). Taste buds not the puppilae rather they are in the pupillae.

Question 4

Extrinsic muscles (4)

Answer 4

§ Styloglossus (pulls backwards)
		§ Palatoglossus (elevates)
			□ CNX innervation
		§ Genioglossus
			□ Protrusion of the tongue
		§ Hypoglossus (depression)

Question 5

Intrinsic muscles

Answer 5

Superior and inferior longitudinal with transverse and vertical muscles

Question 6

Innervation of the tongue

Answer 6

Sensory

- General (touch)
	- CNIX (P)
	- CNV (A)
- Special (Taste)
	- CNIX (P)
            - CNVII (A)

Question 7

Name the teeth and the number

Answer 7

Incisors (4)
Canines (2)
Pre-Molars (4)
Molars (6)

Question 8

Innervation of teeth

Answer 8

The superior and the inferior alveolar nerves from the maxillar and the mandibular nerves of CNV. The maxilla also innervates the external auditory meatus and theerefore can have referred pain here

Question 9

Different salivary glands

Answer 9

Sublingual, submandibular and parotid

Question 10

Role of the Soft Palate

Answer 10

Close off the nasal cavity during coughing, suction and swallowing. Will also close off the oral caviity to allow breathing during chewing

Question 11

Muscles in the Oropharynx

Answer 11

2 above for elevation of the palate (levator veli palatini and Tensor veli palatini), one in the middle (Musculous uvelae) and two below for the depression of the (palatoglossus and palatopharyngeus). All innervated by CNX except tensor veli palatini which is by CNV

Question 12

What is Waldeyer’s Ring?

Answer 12

4 tonsils, palatine, adenoid, lingual and tubal