Stria vascularis is a special eptihelium which
is present in

Options

A. retina of eye
B. pinna of ear
C. cochlea of internal ear
D. nose

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the location of the stria vascularis, a special type of epithelium.

2. **Anatomy of the Ear**: The stria vascularis is located in the internal ear. To understand its location, we need to familiarize ourselves with the structure of the cochlea, which is a part of the inner ear.

3. **Cochlea Structure**: The cochlea has three main parts:
- **Scala Vestibuli**: The upper chamber filled with perilymph.
- **Scala Tympani**: The lower chamber also filled with perilymph.
- **Scala Media**: The middle chamber filled with endolymph.

4. **Role of Stria Vascularis**: The stria vascularis is a specialized epithelium that surrounds the scala media. It plays a crucial role in the production of endolymph and supplies blood to the cochlea.

5. **Conclusion**: Therefore, the stria vascularis is present in the cochlea of the internal ear.

### Final Answer:
The stria vascularis is present in the cochlea of the internal ear.

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