Oral Cavity, Tongue, Floor of Mouth Flashcards
what are the boundaries of the oral cavity
hard and soft palate, tongue, cheeks
what does the dental arches separate the oral cavity into
oral vestibule and oral cavity proper
what is the oral fissure
opening between lips
what is the oral vestibule
space between teeth and cheeks
which arteries anastomose in the lips
superior and inferior labial arteries (from facial artery)
what is the nerve supply to the lips
trigeminal nerve (maxillary and mandibular)
where does the lymph drainage of the lips go to
submandibular and submental nodes
what is the main muscular component of the lips
orbicularis oris
what is the main muscular component of the cheeks
buccinator
what is the innervation of the cheeks
buccal branches of mandibular nerve
what is the blood supply to the cheeks
buccal branches of maxillary artery
what is the labial frenulum
mucosal fold connecting gingiva to lips in midline
what is the buccal frenulum
mucosal folds observed laterally
what is the floor of the mouth formed by
mylohyoid
where does the mylohyoid attach to
mylohyoid line and body of hyoid
what do the mylohyoids attach in the midline to
mylohyoid raphe
what is the mylohyoid supplied by
nerve to mylohyoid
which salivary gland wraps around the free edge of the mylohyoid
submandibular
what are the different types of papilla in the tongue
fungiform, foliate, vallate, filiform
where are the fungiform papilla
apex and margins of tongue
where are the foliate papilla
lateral border of superior surface of tongue
where are the vallate papilla
anterior to terminal sulcus ( posterior tongue )
what is the only papilla that doesnt have taste budes
filiform
what lies behind the terminal sulcus on the tongue
lymphoid nodules
what are the lymphoid nodules collectively known as
lingual tonsils
what is the midline of the tongue marked by
lingual frenulum
what can be seen on each side of the lingual frenulum
lingual vein and sublingual and submandibular ducts
what are the muscles of the tongue separated by
sagittal septum
what are the intrinsic muscles of the tongue
superior longitudinal
vertical
transverse
inferior longitudinal
what do the intrinsic muscles of the tongue do
change size and shape of tongue
what do the superior longitudinal and inferior longitudinal muscles work together to do
make tongue short and thick and retract tongue
what do the vertical and transverse muscles of the tongue do
make it long and narrow
what are the extrinsic muscles of the tongue
palatoglossus
styloglossus
hyoglossus
genioglossus
what do the extrinsic muscles of the tongue do
protrude, retract, elevate and depress the tongue
where does the genioglossus attach
superior mental spines of mandible, hyoid bone
what does the genioglossus do
protrudes tongue
where does the genioglossus lie
superior to geniohyoid muscles
where does the hyoglossus attach to
greater horn of hyoid and intrinsic muscles on lateral aspects of tongue
what does the hyoglossus do
depress the sides of the tongue
which artery supplies the tongue
lingual artery (from ECA)
where does the lingual artery enter the tongue
between hyoglossus and genioglossus
where do the hypoglossal and lingual nerve enter the tongue
on external surface of hyoglossus
where does the styloglossus attach to
styloid process of temporal bone and intrinsic muscles of tongue
what does the styloglossus do
elevates and retracts the tongue
what does the palatoglossus attach to
palatine aponeurosis and intrinsic muscles on lateral surface of tongue
what are the muscles of the tongue innervated by
hypoglossal nerve (palatoglossus supplied by vagus)
what is the innervation for general sensation to the tongue
anterior 2/3 = mandibular
posterior 1/3 = glossopharyngeal
what is the innervation for special sensation to the tongue
anterior 2/3 = facial nerve (chorda tympani)
posterior 1/3 = glossopharyngeal
which veins drain the tongue
deep lingual and dorsal lingual
