The inner ear is made up of the _______ which is a long-coiled tube.

Options

A. cochlea
B. hammer
C. anvil
D. stapes

Answer

To answer the question "The inner ear is made up of the _______ which is a long-coiled tube," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure of the Inner Ear**:
- The inner ear consists of several components, including the cochlea, vestibule, and semicircular canals. Among these, we need to focus on the structure that is specifically described as a "long-coiled tube."

2. **Recognize the Function of the Cochlea**:
- The cochlea is known to be a spiral-shaped, fluid-filled structure that plays a crucial role in the auditory system. It converts sound vibrations into neural signals.

3. **Confirm the Description**:
- The question describes the structure as a "long-coiled tube." The cochlea fits this description perfectly as it is indeed a long, coiled structure.

4. **Conclude with the Correct Answer**:
- Based on the above points, we can conclude that the inner ear is made up of the cochlea, which is the long-coiled tube responsible for hearing.

### Final Answer:
The inner ear is made up of the **cochlea**, which is a long-coiled tube.

---