2014 Inner Ear Physiology

Impedance matching

AREAL RATIO

  • the area of the tympanic membrane is much larger than the round window
Areal ratio

LEVER RATIO

  • the length of the long arm of the malleus is much longer than the long arm of the incus
Lever ratio

BUCKLING ACTION

  • force is transmitted from the centre of the tympanic membrane (i.e., the TM doesn't move as a plate)
Buckling action

 

Email: Dr. Janet Fitzakerley | ©2014 University of Minnesota Medical School Duluth | Last modified: 15-feb-14 9:04 PM