SLHS 305 Exam 3 Questions and Answers | New One | Grade A+

Transduction Ans: The change in sound energy from one form to another Impedance mismatch in the ear Ans: 30 dB SPL loss at the oval window Function of the middle ear Ans: Equalizes pressure Resting potential of the scala media Ans: +80 mv Transduction stages (earliest-latest) Ans: 1. Condensation/rarefaction of air molecules 2. In and out movement of the oval and round windows 3. Back and forth movements of stereocilia 4. Depolarization and hyperpolarization of hair cells 5. Phase locking Best describe what happens when you stimulate the left ear with a loud enough sound to elicit the acoustic reflex Ans: The activity includes in 8th nerve on the left ear and the 7th nerve on both ears Best overcomes the loss of energy due to air-fluid impedance mismatch Ans: Areal ratio advantage Function of the outer ear Ans: Increasing sound pressure in the mid to high frequencies due to resonance Best describes the basilar membrane Ans: Narrow and stiffer at the base than at the apex Part of the hydromechanical stage of the transduction process Ans: Shearing of the stereocilia What is similar to angular (rotational) acceleration