Anatomy of the Oral Cavity Quiz

Muscles of the Mouth

• The digastric muscle elevates the hyoid bone or depresses the mandible.
• The mylohyoid muscle is inserted into the anterior surface of the body of the hyoid bone.

Oral Cavity Anatomy

• The hard palate forms the arched roof of the mouth and the floor of the nasal cavity.
• The oral cavity is bounded externally by the lips and cheeks, and internally by the gums and teeth.
• The oral cavity opens to the outside through the oral fissure.

Boundaries and Openings

• The opening between the oral cavity and the oropharynx is called the faucial isthmus.