Set: Chapter Three Sensory Auditory Mechanism

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All 25 terms

TermDefinition
Inner EarContains fluid filled canals; located in the petrous portion of the temporal bone
Bony Labyrinth & Membranous LabyrinthParts of the inner ear
Bony LabyrinthFilled with perilymph; contains the cochela, vestibule, and three semicircular canals
Membraneous LabyrinthComposed of soft tissue; shape conforms; contains semicircular canals, utircle, saccule, and the cochelar duct
Vestibular Portion of the Inner EarInvovled in sense of balance and orientation; consists of three semicircular fluid-filled canals
Semicircular Canals, Visual Cues, & Sensory CuesComponets of the vestibular portion of the inner ear
CochleaOrgan of hearing, fluid-filled, snail shaped, communicates with the middle ear
Scala Vestibuli, Scala Media, & Scala TympaniCanals of the cochela
Ressiner's & BasilarMembranes of the Inner Ear
Scala MediaCochelar duct, Organ of Corti, contains 3500 inner hair cells & 13,500 outer hair cells
Inner Hair CellsShallow "U" shape; 50-70 cillia on each
Outer Hair Cells"W" shape; 150 cillia on each
Afferent NervesAscending nerves; more extensive for inner hair cells
Efferent NervesDescending nerves; more extensive for outer hair cells
CNVIIIInnervates the cillia of the sensory auditory mechanism
Basilar MembraneNarrow and thin at base, wider at apex
Cochelar NerveHair cells in the organ of Corti synaspe with never fibers which branch together to form this
Vestibular NerveOriginates from the semicircular cannals; forms another branch of CNVIII
Vesibulocochlear NerveCNVIII; also called statoacoustic nerve, auditory nerve, or acoustic nerve; travels through the internal auditory meatus
Mechanical PropertiesDescribe the neural impulses from the inner ear which are transmitted to the brain
Cochlear Fluid ChangesCaused by movements in the stapes footplate; which ultimately leads to this change in pressure
Basilar Membrane DisplacementThe spiral lamina and ligament attachment limit this action; thus bending/shearing sterocilla of outer hair cells
SterocilliaSome are imbedded in the tectorial membrane; release a chemical which causes an electrical charge within the haircell
ShearingDepending on the direction, nerves are stimulated or inhibited
Otoacoustic EmissionsCochela produced sounds from the outer hair cells

Set Information

Terms 25
Creator drdiehl
Created March 26, 2009
Groups None
Subject acoustics
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Most Missed Words

  1. Scala Media Cochelar duct, Organ of Corti, contains 3500 inner hair cells & 13,500 outer hair cells - 2 misses
  2. Semicircular Canals, Visual Cues, & Sensory Cues Componets of the vestibular portion of the inner ear - 2 misses
  3. Cochelar Nerve Hair cells in the organ of Corti synaspe with never fibers which branch together to form this - 2 misses
  4. Cochlear Fluid Changes Caused by movements in the stapes footplate; which ultimately leads to this change in pressure - 2 misses
  5. Vestibular Portion of the Inner Ear Invovled in sense of balance and orientation; consists of three semicircular fluid-filled canals - 2 misses
  6. Basilar Membrane Displacement The spiral lamina and ligament attachment limit this action; thus bending/shearing sterocilla of outer hair cells - 2 misses
  7. Ressiner's & Basilar Membranes of the Inner Ear - 2 misses