Name the hearing apparatus of human ear.

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the name of the hearing apparatus of the human ear.

2. **Recall the Structure**: The primary structure responsible for hearing in the human ear is known as the Organ of Corti.

3. **Additional Information**: The Organ of Corti is often referred to as the "spiral organ" because of its spiral shape. It is located within the cochlea of the inner ear.

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