Oral Cavity and Pharynges Flashcards
What are the two fauces of the mouth?
Glossopalatine arch and pharyngopalatine arch
What attaches the inferior surface of the tongue to the floor of the mouth?
Lingual frenulum
Which salivary gland produces the most saliva?
Submandibular salivary gland (60-70% of saliva)
What does saliva contain?
Amylase, antibodies, lysozymes
What maintains alveolar bone?
Periodontal ligament
How many teeth do babies have vs adults?
20 teeth vs 32 teeth
What are the three phases of swallowing?
Voluntary phase, pharyngeal phase, esophageal phase
What muscles tense and raise the soft palate?
Levator veli palatini (vagus n) and tensor veli palatini (trigeminal n V3)
What separates the superior constrictor muscle and the buccinator muscle?
Pterygomandibular raphe
Why is the pterygomandibular raphe clinically important?
Site for injection for superior alveolar nerve block
What is waldeyer’s lymphatic ring?
Palatine, pharyngeal, and lingual tonsils that initiate lymphatic response and all drain to deep cervical lymph nodes
What nerve is just lateral to the palatine tonsil?
Glossopharyngeal nerve
What does tensor veli palatini do?
Tenses soft palate, depressurizes middle ear
What does levator veli palatini do?
Elevates tensed soft palate, acts on pharyngotympanic tube
What nerve is gag reflex induced by?
CN IX
