Oral Cavity

What is the anterior boundary of the oral cavity?

lips
muscles of facial expression

What is the posterior boundary of the oral cavity?

oropharynx

What is the lateral of the oral cavity?

cheek
buccinator m.

What is the superior boundary of the oral cavity?

hard + soft palate

What is the inferior boundary of the oral cavity?

tongue

What two parts make up the oral cavity?

1. oral cavity proper
2. oral vestibule

Oral cavity proper

surrounded by arches(teeth)

Oral vestibule

area outside arches (between the teeth and lips/cheeks)

What is the relevance of the pterygomandibular raphe?

origin of buccinator m. + superior pharyngeal m.

What is the pterygomandibular fold an important landmark for?

inferior alveolar nerve block

torus palatinus

benign, painless bony protrusion on the hard palate

torus mandibularis

benign, painless bony protrusion on the mandible

maxillary exostosis

bony protrusions on the buccal surface of the maxilla

What is located in the incisive foramen with the nasopalatine nerve?

anastomosis between greater palatine a. . + shenopalatine a.

Which nerves innervate the hard palate?

nasopalatine n.
greater palatine n.

Which nerves innervate the soft palate?

lesser palatine n.

What represents the point of transition from the oral cavity to the oropharynx?

fauces
(bounded by palatoglossal + palatopharyngeal arches)

What is dysphagia?

difficulty swallowing

Where is the body of the tongue located?

(anterior 2/3)
oral cavity

Where is the root of the tongue located?

(posterior 1/3)
oropharynx

What separates the body from the root?

terminal sulcus

What papilla does not have taste buds?

filiform

What are the three extrinsic tongue muscles?

genioglossus
hyoglossus
styloglossus

Where does the genioglossus originate from?

mandible

Where does the hyoglossus originate from?

hyoid bone

Where does the styloglossus originate from?

styloid process of temporal bone

What is the function of the genioglossus?

protract/stick out tongue

What is the function of the hyoglossus?

depress + retract tongue

What is the function of the styloglossus?

elevate + retract tongue

What nerve innervates tongue musculature? (motor)

CN XII (except palatoglossus m. - X)

Which nerves innervate general sensory of the tongue?

CN V, IX, X

Which nerve innervate taste of the tongue?

CN VII, IX, X

What is the inferior alveolar n. a branch of?

V3

What is the superior alveolar n. a branch of?

V2