11 - Oral Cavity Flashcards
Facial a. supplies most of the
superficial structures of oral (buccal) cavity
Oral Cavity roof
hard and soft pallate
Oral cavity floor
Tongue (dorsum of the tongue) & sublingual region = floor
Oral cavity walls
Teeth & gums (gingiva) = anterior/lateral walls
Palatoglossal arches
oral cavityposterior/lateral walls
Palatopharyngeal arches
The oral cavity is continuous with the .
oropharynx
Palatine aponeurosis
From tensor veli palatini m.
& palatoglossus m.)
Levator veli palatini m.
innervation
CN X Vagus via pharyngeal branch to pharyngeal plexus
Levator veli palatini m. function
Function: Only muscle to elevate the soft palate above the neutral position
Levator veli palatini m. Clinically the Levator is tested by asking the patient to
say “ah” (CN X test)
If the muscle on each side is functioning normally, the palate elevates evenly in the midline.
If one side is not functioning, the palate deviates away from the abnormal side
Palate: Vascular Supply
Descending palatine a. Greater Palatine a. Lesser Palatine a. Ascending Palatine a Palatine a
Palate venous drainage via
Pterygoid & Pharyngeal plexuses
Descending palatine a.
gives rise to
Greater & Lesser Palatine aa
Descending palatine a.
descends
thru palatine canal
Greater Palatine a.
supplies
anterior palate
Greater Palatine a.
passes through
greater palatine foramen
Lesser Palatine a.
supplies
posterior palate
Lesser Palatine a.
passes through
lesser palatine foramen
Ascending Palatine a.
branch of facial a.
Palatine a. -
br. of Ascending Pharyngeal a.
Soft Palate: Motor N. Supply
Mandibular n. (CN V3)
Vagus n. (CN X)
Mandibular n. (CN V3)
soft palate supplies
Supplies Tensor veli palatini m.
Vagus n. (CN X) supplies
soft palate
Supplies Levator veli palatini mm., Palatoglossus mm., Palatopharyngeus mm., Musculus uvulae, Salpingopharyngeus mm.* (via pharyngeal plexus)
Tonsillectomy
Palatine tonsils may be removed
Heavy bleeding may occur from aa