Which part of the ear amplifies sound
A. Outer ear
B. Inner ear
C. Middle ear
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Which part of the ear amplifies sound
A. Outer ear
B. Inner ear
C. Middle ear
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Answer:
A. Outer ear
Explanation:
The auricle (pinna) is the visible portion of the outer ear. It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.
The auricle (the outer part of your ear) and the ear canal (the passage down to the eardrum) serve not only to collect and funnel sound, they also serve to amplify sound. The ear canal, specifically, amplifies sound in the high frequencies (for an adult, typically in the region between 2000-4000 Hz).