Normal Anatomy

Question 1

Only muscle that depresses mandible

Answer 1

Lateral pterygoid

All others elevate

Question 2

Ankyloglossia

Answer 2

Tongue tied

When lingual frenum limits tongue movement
Can cause speech impediments

Question 3

Primary muscles for mastication

Answer 3

Masseter
Temporalis
Lateral and medial pterygoid

Question 4

Secondary muscles for mastication

Answer 4

Buccinator
Suprahyoid muscles
Infrahyoid muscles

Question 5

Exostosis

Answer 5

Term for any bony growth

Lateral surface growth towards cheek or tori

Question 6

Mucous membrane vs keratin layer

Answer 6

Mucous- lines the mouth, like skin except wet
Cheeks and floor of mouth

Keratin layer- tough outer tissue to cover mucosa
Hard palate and gingiva