Salivary Glands And Submandibular Region Flashcards
What secretions does the submandibular gland secrete?
Serous and mucous
Where does the submandibular duct travel? Where is the lingual nerve in relation?
Begin in gland between mylohyoid and hyoglossus, travels anteriorly and enters oral cavity beside base of frenulum
Lingual nerve loops under the duct before entering oral cavity
What vessels supply and drain the submandibular gland? What nerve innervates it?
Mental artery and mental veins supply and drain the gland
Innervate by lingual nerve via chordae tympani
What secretions is the sublingual glands? Where found?
Mostly mucous, some serous
Almond shaped and lies in floor of mouth between mandible and hyoglossus, lateral to the lingual nerve
Where are the sublingual ducts? How do they travel?
Below sub lingual folds
Drain via openings into crest of sublingual fold
Blood supply, venous drainage and innervation to sublingual glands?
Blood supply = submental and sublingual arteries
Venous = sublingual and Submental veins
Innervation = lingual nerve via facial nerve chorda tympani
What minor salivary glands are there?
Buried within the submucosa of the oral cavity
Buccal - cheek
Palatine - palate
Lingual - tongue
Labial - lip
What nerves innervate the minor salivary glands?
Above oral fissure = greater petrosal nerve branch of CNVII
Below oral fissure = chorda tympani of VII to the lingual nerve to glands
What pathologies may occur from salivary glands?
Mumps
Salivary stones / calculi
Excessive salivation (ptyalism)
What are mumps? Symptoms and treatment?
Viral infection in children
Painful swelling over salivary glands, mainly parotid
MMR vaccine to prevent, supportive to relieve pain. Can spread to form viral meningitis
What are salivary stones? How caused? (Sialolithiasis) symptom? Treated?
Calcified saliva that blocks salivary ducts
Common in submandibular due to upward course
Pain, swelling and lack of salivation
Treated by resection of duct/gland but care must be taken not to damage lingual nerve
How does excess salivation occur?
Prior to vomiting, but can be due to several disease pathologies
What can be done to treat for a submandibular tumour or stone?
Excision of the submandibular gland. Incision made inferior to mandible as to avoid damaging margin; mandibular branch. Also care taken to not damage lingual nerve when incising duct as duct passes directly superior to lingual nerve
What is a sialogram and how can it be performed on a submandibular gland? Can it be done on a sublingual gland?
Contrast medium injected into duct and then viewed radiographically to see where a blockage is.
Can’t be done on sublingual due to small and many ducts
