Scala vestibuli and scala media contain respectively

Options

A. Endolymph and perilymph
B. Perilymph and endolymph
C. Endolymph only
D. Perilymph only

Answer

To answer the question regarding what scala vestibuli and scala media contain respectively, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Scala Vestibuli**:
- The scala vestibuli is one of the three main compartments of the cochlea in the inner ear.
- It is filled with a fluid known as perilymph.

2. **Identify Scala Media**:
- The scala media, also known as the cochlear duct, is another compartment of the cochlea.
- It is filled with a different fluid called endolymph.

3. **Match the Contents with the Structures**:
- Now, we can summarize:
- Scala vestibuli contains perilymph.
- Scala media contains endolymph.

4. **Evaluate the Options**:
- If we look at the options provided:
- Option 1: Endolymph and perilymph (Incorrect)
- Option 2: Perilymph and endolymph (Correct)
- Option 3: Endolymph only (Incorrect)
- Option 4: Perilymph only (Incorrect)

5. **Conclusion**:
- The correct answer to the question is that scala vestibuli contains perilymph and scala media contains endolymph, which corresponds to Option 2.

### Final Answer:
**Scala vestibuli contains perilymph and scala media contains endolymph.**

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