Anatomy Of The Oral Cavity And Pharynx Flashcards
What are the lateral walls of the oral cavity?
Buccinator muscles
What forms the roof of the oral cavity?
Hard and soft palate
What forms the floor of the oral cavity?
Tongue
Where does the oral cavity extend to posteriorly?
Oropharyngeal isthmus
Which two muscles form the oropharyngeal isthmus?
Palatopharyngeal and palatoglossus
How do we keep food in the oral cavity during mastication?
Contraction of palatoglossus and palatopharyngeal pulls soft palate down towards back of tongue
Which tonsils make up waldeyer’s ring?
Adenoid (pharyngeal), palatine and lingual tonsils
What are the three major functions of the oral cavity (mouth)?
Digestion, communication and breathing
Where does the duct of the parotid gland open into the oral cavity?
Opposite the upper second molar tooth
What is the function of the mylohyoid and geniohyoid muscles?
Pulls the larynx forward during swallowing
Which salivary gland is most susceptible to sialoliths?
Sub mandibular
What is a sialolith?
A calcified deposit forming in a salivary gland which may cause blockage of a duct
What is the fold of oral mucosa connected the tongue to the floor of the oral cavity?
Frenulum
What are the actions of the intrinsic muscle of the tongue?
Alter the shape of the tongue
What is the action of the extrinsic muscles of the tongue?
Alter position of the tongue e.g protrusion
