Which portion of the basilar membrane vibrates most vigorously in response to high-pitch sounds?

Explanation

To answer the question "Which portion of the basilar membrane vibrates most vigorously in response to high-pitch sounds?", we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding Sound Waves**: Sound waves from the environment enter the outer ear and are directed towards the eardrum (tympanic membrane).

**Hint**: Remember that sound waves need a medium to travel, and they enter through the outer ear.

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