oral cavity and submandibular Flashcards
importance of a week old oral ulcer
- need to examine the oral cavity as stubborn ulcers in the oral cavity are 95% cancers
gland that sits inside the oral cavity
- sublingual gland
- submandibular (opening sits at the base of the frenulum)
how can the palatine tonsils be identified
between the palatoglossal and palatopharyngeal arch
what are the types of papillae on the tongue
fungiform papillae
filiform papillae
vallate papillae
lateral side of mylohyoid
has a free posterior margin with no attachment
what makes up the triangular aperture?
mylohyoid
superior constrictor
middle constrictor
intrinsic muscles of the tongue
- superior longitudinal
- vertical longitudinal
- transverse longitudinal
- inferior longitudinal
intrinsic means theres no attachment outside of the tongue
extrinsic muscles of the tongue
- palatoglossus
- styloglossus
- hyoglossus
- genioglossus
what nerve innervates the muscles of the tongue and the exception
all innervated by the hypoglossal nerve
EXCEPT
palatoglossus is innervated by the vagus nerve
from superficial to deep what structures run
- anterior belly of digastric
- mylohyoid
- geniohyoid
- genioglossus
path of hypoglossal nerve
runs through the triangular aperture and through the (deep to the mylohyoid) and runs in the potential space between mylohyoid and geniohyoid
course of liguinal artery
deep to hypoglossus
potential space between hypoglossus and genioglossus
importance of hyoglossus as a landmark
helps identify the 3 nerves running in the oral cavity
- hypoglossal nerve (anterior)
- lingual nerve (anterior)
- glossopharyngeal nerve
sensory taste
taste supplied to the anterior 2/3rd by the chord tympani branch of the facial nerve
- this nerve runs with the lingual nerve which helps
posterior 1/3rd from glossopharyngeal
what sensory nerve supplies the oral cavity
V3 via lingual nerve
