Oral Cavity 1 Flashcards
What are the boundaries of the oral cavity?
Extends from the lips to the oropharyngeal isthmus
What is the oropharyngeal isthmus?
Is the junction of mouth and pharynx
What is the oral cavity divided into?
Vestibule and oral cavity proper
What is the vestibule?
Slit like space between the cheeks and the gums
What is the oral cavity proper?
Everything
Not cheeks and teeth
Where does the vestibule communicate with the oral cavity proper?
The cavity behind the third molar on each side
What muscle forms the lateral wall of vestibule?
Buccinator muscle
What covers the cheek (buccinator muscle medically and laterally?
Laterally = skin
Medially = mucous membrane
What is the small papilla?
mark the opening of ducts and bumps/taste buds on tongue
Where are the small papilla found in the vestibule?
Upper second molar tooth
What do the papilla near the upper second molar tooth mark?
Duct of the parotid gland
What alveolar margins are the oral cavity proper within?
The maxillae and the mandible
What forms the roof of the oral cavity proper?
Formed by the hard palate anteriorly and the soft palate posteriorly
What forms the floor of the oral cavity proper?
Mylohyoid muscle
What part of the tongue lies on the floor of the oral cavity proper?
Anterior 2/3
What is the floor of the mouth covered in?
Mucous membrane
What does the frenulum connect?
The tongue to the floor of the mouth
What is found at each side of the frenulum?
A small papilla has the opening of the duct of the submandibular gland
What does the sublingual gland drain into?
Submandibular lymph nodes