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Parotid Region UAB Gross
Parotid
25
Anatomy
Professional
03/15/2010

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Cards

Term
What type of gland is the parotid gland?
Definition
Serous
Term
What part of the parotid gland projects between the TMJ and external acoustic meatus?
Definition
Glenoid process
Term
Does the parotid duct pass superficial or deep to the masseter?
Definition
Superficial
Term
At what tooth level does the parotid duct enter the mouth?
Definition
2nd maxillary molar
Term
Sialogram
Definition
Test to see if the parotid duct is jammed.  Inject opaque dye and look for the block
Term
Why would sucking on a lemon cause pain?
Definition
  • The parotid duct is blocked and secretions are backed up
Term
Viral infection can cause what part of the parotid gland to turn red?
Definition
papilla
Term
What is the parotid bed and what is it composed of?
Definition
  • Place where the parotid gland lies
  • formed by bones and muscles
  • anteriomedially = ramus f the mandible and two muscle (masseter and medial pterygoid ms)
  • Posteromedially = mastoid and styloid processes and associated ms (scm, post belly of digastric, stylohyoid)
Term
What separates the parotid gland from the ICA, IJV, and IX-XII?
Definition
styloid process and its muscles
Term
What three important things pierce the parotid gland? (superficial to deep)
Definition
  1. Facial nerve
  2. External jugular vein
  3. External carotid artery
Term
Does benign or maligant tumors of the parotid gland invade and cause facial paralysis?
Definition
Malignant
Term
The parotid fascia is continous with which layer of fascia?
Definition
Investing layer
Term
What is a common symptom of mumps relevant to the parotid region?
Definition
Chewing can cause pain because of the swollen gland
Term
What cranial nerve sends parasympathetic fibers to the parotid gland?  What ganglion is involved?
Definition
CN9 , otic
Term
Tract parasympathetic fibers of CN9 to the parotid gland
Definition
  1. Leaves jugular foramen
  2. Branches off inferior ganglion as tympanic nerve
  3. enters tympanic canaliculi and becomes lesser petrosal nerve after tympanic plexus
  4. leaves inner ear along lesser petrosal hiatus
  5. leaves skull via foramen ovale
  6. enters infratemporal fossa
  7. joins otic ganglion
  8. exits as the auriculotemporal nerve
  9. innervates parotid gland
Term
How do sympathetic fibers innervate the parotid gland?
Definition
Involves thoracic spinal cord, superior cervical ganglion, external carotid plexus
Term
Sensory nerve to the parotid gland, what nerve is it?
Definition
Auriculotemporal nerve, V3
Term
What are the symptoms of Frey's Syndrome?
Definition
sweating on the skin over the parotid gland
Term
What is the etiology of Frey's syndrome
Definition
  • Upon damage of the parasympathetic fibers in the auriculotemporal n, healing begins
  • Healing sometimes involves the parasympathetic fibers to innervate the sweat glands of the face
  • Thus when eating (should be stim parotid), one stimulates the sweat glands (they are cholinergic)
Term
What is the arterial supply to the parotid gland?
Definition
External carotid that branches into the maxillary artery and superficial temporal artery
Term
What is the venous drainage of the parotid gland?
Definition
Retromandibular vein
Term
Through what space can a parotid tumor affect the pharynx?
Definition
Lateral pharyngeal space
Term
What forms the retromandibular vein?
Definition
Superficial temporal vein and maxillary vein
Term
What separates the parotid gland from the submandibular gland?
Definition
Stylomandibular ligament
Term
What sensory nerve innervates the TMJ?
Definition
auriculotemporal n, V3
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