Question

the outer ear channels sound waves down the external ________ to the ________, a tight membrane that vibrates in response to sound waves. a. auditory canal... oval window b. pinna... eardrum c. auditory canal... eardrum d. pinna... cochlea please select the best answer from the choices provided

Explanation:

• The outer ear consists of the pinna (which collects sound waves) and the auditory canal.
• Sound waves travel down the auditory canal to the eardrum (a tight membrane that vibrates in response to sound waves).
• The oval window is part of the inner ear (not where sound waves first go from the outer ear).
• The cochlea is also part of the inner ear (involved in converting vibrations to neural signals, not the initial membrane vibration site from outer - ear sound waves).

Answer:

C. auditory canal... eardrum