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47 Cards in this Set

  • Front
  • Back
The temporal branch of the facial nerve innervates which muscles?
frontalis muscle, corrugator supercilii, procerus
The temporal/zygomatic branch of the facial nerve innervates which muscles?
orbicularis oculi
The zygomatic/buccal branch of the facial nerve innervates which muscles?
zygomaticus major
The buccal branch of the facial nerve innervates which muscles?
zygomaticus minor, levator labii superioris, levator labii superioris alaeque nasi, risorius, buccinator, levator anguili oris, nasalis
The buccal/mandibular branch of the facial nerve innervates which muscles?
depressor anguli oris
The mandibular branch of the facial nerve innervates which muscles?
depressor labii inferioris, mentalis
The cervical branch of the facial nerve innervates which muscles?
platysma
The nerve to posterior digastric and stylohyoid muscle innervate which muscles?
anterior belly of diagrstric muscle and stylohyoid muscles
The somatic afferent fibers of the facial nerve innervates what?
skin of the external auditory meatus
The greater palatine nerve innervates what?
palatal, nasal and pharyngeal mucosa
The temporal branch of the facial nerve innervates which muscles?
frontalis muscle, corrugator supercilii, procerus
The temporal/zygomatic branch of the facial nerve innervates which muscles?
orbicularis oculi
The zygomatic/buccal branch of the facial nerve innervates which muscles?
zygomaticus major
The buccal branch of the facial nerve innervates which muscles?
zygomaticus minor, levator labii superioris, levator labii superioris alaeque nasi, risorius, buccinator, levator anguili oris, nasalis
The buccal/mandibular branch of the facial nerve innervates which muscles?
dpressor anguli oris
What does the chorda tympani innervate?
submandibular and sublingual glands, taste buds of the anterior 2/3 of the tongue
What does the greater superficial petrosal nerve innervate?
lacrimal, nasal and palatine glands
What does the auriculotemporal nerve innervate?
parotid gland
What is the function of the frontalis muscle?
brow elevation
What is the function of the corrugator supercilii?
brow medialization/depression
What is the function of the procerus?
brow depression; production of transverse wrinkles of the nasal radix
What is the function of the orbicularis oculi?
eyelid closure
What is the function of the zygomaticus major?
lateral upper lip elevation (primary smile actuator)
What is the function of the zygomaticus minor?
upper lip elevation
What is the function of the levator labii superioris?
upper lip elevation; elevation of nasolabial fold
What is the function of the levator labii superioris alaeque nasi?
upper lip elevation; elevation of medial-most nasolabial fold
What is the function of the risorius?
oral commisure lateral retraction (additional smile actuator)
What is the function of the buccinator?
cheek compression
What is the function of the levator anguli oris?
oral commissure elevation and medialization
What is the function of the nasalis?
dilates and constricts nares (via transverse and alar heads)
What is the function of the depressor anguli oris?
oral commisure depression
What is the function of the depressor labii inferioris?
lower lip depression
What is the function of the mentalis?
chin soft tissue elevation
What is the function of the platysma?
oral commisure depression
What is the function of the anterior belly of the digastric muscle and stylohyoid muscle
hyoid elevation
What are the 2 causes of congenital (neonatal) facial paralysis?
Mobius syndrome, obstetrical facial paralysis (from forceps)
What is Mobius syndrome?
a defect in development of facial nucleus; often associated with paralysis of extraocular muscles
What infections are associated with facial paralysis?
herpes zoster, bacterial otitis externa, bacterial otitis media, mastoiditis, parotitis, varicella zoster
What is the most common form of facial paralysis?
Bell's palsy
What percentage of Bell's palsy patients have at least partial recovery?
90%
What percentage of Bell's palsy patients have total recovery?
50%
What is the treatment for Bell's palsy?
steroids (need otherwise normal exam and normal audiogram first)
What is Bell's phenomenon?
presence of superolateral duction of the eye on attempting lid closure
What are the motor branches of the facial nerve?
temporal, zygomatic, buccal, mandibular and cervical. Remember: Two Zebras Bit My Cat
What are the 3 most common causes of adult facial paralysis?
Bell's palsy, trauma, Ramsay Hunt syndrome
What is the Ramsay Hunt syndrome?
herpes zoster oticus which presents with facial paralysis and ear pain
What nerve innervates the anterior belly of the digastric muscle?
trigeminal nerve