Middle ear muscles - PowerPoint PPT Presentation

Anatomy Physiology and Disorders of the Hearing

Anatomy Physiology and Disorders of the Hearing. Perry C. Hanavan, Au.D. Audiologist. Major Divisions of the Ear. Peripheral Mechanism. Central Mechanism. Question. What is the purpose of the pinna? A. Cosmetics B. Sound collector C. Same side localization D. A and B E. A, B and C.

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Chapter 11 Clinical Application

Chapter 11 Clinical Application. Perry C. Hanavan, Au.D. Outer Ear Resonance. Influence of pinna (p) Influence of ear canal (c) Combine influence (t) At 3000 Hz, the final amplification (t) is 20 dB. Transformer/Amplifier. Area ratio Thumbtack Lever crowbar. Middle Ear Muscles.

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The external ear funnels sound waves to the external auditory meatus.tsound . From

The external ear funnels sound waves to the external auditory meatus.tsound . From the meatus , the external auditory canal passes inward to the tympanic membrane (eardrum(-

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376 views • 17 slides

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