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29 Cards in this Set

  • Front
  • Back
Cranial nerves that travel with jugular vein
CN 9, 10, 11
Vestibular orientation
at right angles to one another
Part of the ear responsible for auditory fuction
cochlea
Structures between the cochlea and semicircular canals
urticle and sacule

(vestibule)
Sensory innervation to inner ear
CN 8- Vestibulocochlear

through the internal acoustic meatus
Path of the Facial nerve (CN7) in this area
travels through the internal auditory meatus, travels over inner ear structures and bends posteriorly at the internal genu and descends in the posterior wall of the tympanic cavity adn exits the skull in stylomastoid foramen it then bends forward to give innervation to muscles of facial expression
Arterial supply to the external ear
Superficial temporal a.
Posterior auricular a.
Nervous supply to the external ear
Auriculotemporal (V3)
Great auricular (C2,3)
What part of the external auditory meatus is cartilage
lateral 1/3
What part of the external auditory meatus is bone
medial 2/3

tympanic portion of temporal bone
An excess of ear wax causes
conduction deafness
Overall function of the ossicles of the ear
to give a mechanical advantage
Innervation of the external acoustic meatus
Auriculotemporal nerve (V3)
Facial Nerve via tympanic plexus
Auricular branch of vagus
Where is the cone of light seen on the tympanic membrane
anterior inferior quadrant
Which bone of the ear cannot be seen with an otoscope on the tympanic membrane
Stapes
Center of tympanic membrane
Umbo
Smallest muscle in the body
stapedius
Innervation of the typanic cavity
facial CN7
glossopharyngeal (CN 9)
Nerve that runs over the handle of the malleus
chordae tympany
joins with the lingual nerve to innervate the tongue
Footplate of stapes sits in...
oval window
when the oval window pushes out...
the round window pushes in
Tympanic nerve
branch of glossopharyngeal
Connects typanic membrane to nasopharynx

Equalizes pressure in the middle ear to atmospheric pressure
auditory (pharygotympanic) tube
sensory part of the semicircular canal
ampulla
the oval window and the round window are located...
in the vestibule
Osseus fluid
perilymph
Labyrinth fluid
endolymph
Utricle and sacule detect...
gravity, linear and verticle accelleration
Can cause conduction defecits
Wax in external acoustic meatus
Damaged tympanic membrane
Otosclerosis
Otis media
Facial nerve lesion causing a loss of stapedius innervation