Salivary Glands and Submandibular Region Flashcards
what are the 3 major salivary glands
parotid, submandibular, sublingual
which gland wraps around the mylohyoid
submandibular
what does the lingual nerve loop around
submandibular duct
where are the submandibular glands found
along mandible
what does the submandibular gland secrete
mixed serous and mucous secretions
where does the submandibular duct begin
in gland between mylohyoid and hyoglossus
what covers the submandibular gland
a fascial capsule
which artery makes a groove in the submandibular gland
facial artery
where does the submandibular duct run
anteriorly from deep part of gland and opens either side of frenulum
what is the blood supply to the submandibular glands
via submental arteries (branch of facial artery)
what is the venous drainage of submandibular glands
submental veins (to lingual and facial veins)
what does the sublingual gland secrete
mostly mucous but some serous too
where does the sublingual gland lie
between mandible and hyoglossus
in sublingual fossa of mandible
where do the sublingual ducts drain
into crest of sublingual fold
what is the blood supply to the sublingual glands
via submental and sublingual arteries (branch of facial and lingual arteries)
what is the drainage of the sublingual glands
submental veins (to lingual and facial veins)
where do the preganglionic parasympathetic fibres travel to
submandibular ganglion from chorda tympani and via lingual nerve
where do the postganglionic parasympathetic fibres travel to
in the lingual nerve to the sublingual gland and submandibular gland
what does the sympathetic innervation in the mouth lead to
vasoconstriction and reduction in volume of saliva
what does parasympathetic innervation in the mouth lead to
secretion of saliva
what is the sympathetic innervation of the parotid gland
glossopharyngeal nerve through tympanic and lesser petrosal nerves
synapse in otic ganglion
run in auriculotemporal nerve
what is the sympathetic innervation of the submandibular and sublingual glands
from superior cervical ganglion and nerve plexus of ECA straight to the glands
what are the minor salivary glands
buccal, palatine, lingual, labial
what are the minor salivary glands innervated by
CNVII AND CNV
what are the minor salivary glands susceptible to
mucoceles
what are the minor salivary glands susceptible to
mucoceles
what is the parasympathetic innervation to minor salivary glands above the oral fissure
fibres synapse in pterygopalatine ganglion and travel to glands via palatine nerves
what is the parasympathetic innervation to minor salivary glands below the oral fissure
fibres synapse in submandibular ganglion and then travel in lingual nerve to glands
what is mumps
viral infection in children affecting parotid gland
what cures mumps
mmr vaccine, supportive treatment
if mumps spreads what does it cause
viral meningitis
what are salivary stones/calculi signs
pain, swelling, lack of salivation
where are salivary stones common
submandibular duct due to upward course
what are salivary stones treated by
surgical removal
what are the 3 pathologies of the salivary glands
mumps, salivary stones, excessive salivation
what does the submandibular triangle contain
submandibular gland, lymph nodes, hypoglossal nerve, mylohyoid, facial artery and vein, digastric
what does the submental triangle contain
submental lymph nodes and some small veins
what does the carotid triangle contain
carotid sheath, ECA, accessory and hypoglossal nerves, deep cervical lymph nodes
what are the suprahyoids
mylohyoid, digastric, geniohyoid, stylohyoid
what are the infrahyoids
sternohyoid, sternothyroid, omohyoid, thyrohyoid
where does the mylohyoid attach
mylohyoid line and hyoid and fibres of opposite mylohyoid
what is the action of the mylohyoid
elevate hyoid and floor of mouth
what is the innervation of mylohyoid
nerve to mylohyoid
where does the anterior digastric attach
digastric fossa and intermediate tendon
what does the anterior digastric do
raise hyoid and open mouth
what is the innervation of the anterior digastric
nerve to mylohyoid
where does the posterior digastric attach
mastoid notch on mastoid process and intermediate tendon
what is the action of the posterior digastric
elevate and retract hyoid
what is the innervation of posterior digastric
digastric branch of CNVII
where does the stylohyoid attach
styloid process and hyoid bone
what does the stylohyoid do
pulls hyoid bone up
what innervates the stylohyoid
facial nerve
where does the geniohyoid attach
mandible (mental spines) and body of hyoid
what is the action of the geniohyoid
elevates and pulls hyoid forward/pulls mandible downward and inward
what is the innervation of the geniohyoid
anterior ramus of c1
what are the branches of the ECA
superior thyroid, ascending pharyngeal, occipital, lingual, facial, posterior auricular, superficial temporal, maxillary
