Anatomy lab semester 2 Flashcards
what is the pathology that leads to bells palsy
idiopathic; generally related to inflammation of the stylomastoid foramen where the facial nerve leaves the skull
describe the nerve supply of the temporalis
mandibular division of the trigeminal nerve
what clinical condition can affect the integrity of the buccinator muscle and how does this manifest in day to day function
stroke - causing patient to be unable to keep food in the centre of the oral cavity, leading to drooling
label this
label this
how often do patients have an accessory parotid gland
20% of patients
what three structures pass through the parotid gland
facial nerve
external carotid artery
retromandibular vein
label the coloured vessels
label this
label the muscles on this specimen
what are the two components of the orbicularis oculi
palpebral and orbital
describe the nerve supply of the orbicularis oculi
temporal and zygomatic branches of the facial nerve
if the nerve supply to the orbicularis oculi was paralysed, what would be the functional consequences for the patient
eye would always be open, so they could get corneal drying, irritation, or corneal ulceration in the worst case
label this
what are the attachments of the mandible
zygomatic arch and the mandible
what are the nerve supplies of the masseter
mandibular division of the trigeminal nerve
what are the main branches of the facial nerve arising from the anterior border of the parotid gland
temporal
zygomatic
buccal
marginal mandibular
cervical
what does the temporal branch of the facial nerve supply
frontalis and upper eye muscles
what does the zygomatic branch of the facial nerve supply
zygomatic muscles and some of the elevators of the mouth
what does the buccal branch of the facial nerve supply
the buccinator
what does the marginal mandibular branch of the facial nerve supply
the depressors of the mouth
what does the cervical branch of the facial nerve supply
platysma
what bone in the base of the skull does the facial nerve pass through
petrous temporal bone
where does the facial nerve exit the skull from
the stylomastoid foramen
what is the treatment for bells palsy
acyclovir and prednisolone
label this