Which option correctly describes cochlea in human beings ?

Options

A. Hammer shaped bone
B. Tiny hair projections
C. Thin muscular flap
D. Long coiled tube

Answer

To answer the question "Which option correctly describes cochlea in human beings?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Cochlea**: The cochlea is a spiral-shaped, coiled structure located in the inner ear. It plays a crucial role in the process of hearing.

2. **Function of the Cochlea**: The primary function of the cochlea is to convert sound vibrations into electrical signals. These signals are then transmitted to the brain via the auditory nerve.

3. **Structure of the Cochlea**: The cochlea is not just a simple tube; it is coiled and resembles a snail shell. This unique structure allows it to effectively process sound waves.

4. **Analyzing the Options**: Given the options:
- Hammer shaped bones: This refers to the ossicles (hammer, anvil, stirrup) but does not describe the cochlea.
- Tiny hair projections: While there are hair cells in the cochlea, this does not describe the cochlea itself.
- Thin muscular flap: This does not relate to the cochlea.
- Long coiled tube: This accurately describes the cochlea as it is indeed a long, coiled structure.

5. **Conclusion**: The correct option that describes the cochlea in human beings is "Long coiled tube".

### Final Answer:
The option that correctly describes the cochlea in human beings is "Long coiled tube".

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