Oral Cavity and Pharynx

Question 1

What is the function of the oral cavity?

Answer 1

ingestion of food
preparation for digestion
food chewed by teeth
saliva from glands assist in forming food bolus

Question 2

what is the main function of the tongue?

Answer 2

forming words during a speech

pushing food into the pharynx when swallowing

Question 3

what nerves innervate the tongue muscles

Answer 3

the bulk of the muscles are innervated by the hypoglossal CN XII

Question 4

what nerves does general sensation

Answer 4

anterior 2/3 CN V3 (trigeminal nerve, mandibular branch) lingual nerve terminal
posterior 1/3 CN IX (glossopharyngeal nerve) lingual branch

Question 5

what nerves does special sensation

Answer 5

Anterior 2/3, CN VII, Facial nerve
Posterior 1/3 CN IX, Glossophyarngeal

Root of the tongue both sensory and taste - CN X, vagus nerve

Question 6

what is the palate?

Answer 6

is the arched roof of the mouth and is the floor of the nasal cavity

consists of 2 regions
Hard and soft

Question 7

Describe the hard palate?

Answer 7

Concave in shape
Anterior 2/3 of the palate

Consists of the boney skeleton:

• Palatine processes of maxillae
• Horizontal plates of palatine bones

Question 8

Desribe the soft palate

Answer 8

Posterior 1/3 of palate
Suspends posteriorly from the hard palate
Consists of fibromuscular tissue

Function

• helps with swallowing
• elevates to stop food going into the nasopharynx

Question 9

What nerve supplies the soft palate

Answer 9

the soft palate is innervated by the CN X vagus nerve except for tensor veli palatin, CN V3