The scale vestibuli ends at the _________ . While the scala tympani terminates at the _____________ . Find the correct option .

Options

A. Scala media, temporal bone
B. Oval window, round window
C. Pinna, tympanic membrane
D. Eustachian tube, external auditory meatus

Answer

To solve the question regarding the endings of the scala vestibuli and scala tympani, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Cochlea**:
- The cochlea is a spiral-shaped structure in the inner ear that contains three main chambers: scala vestibuli, scala media, and scala tympani.

2. **Identify the Scala Vestibuli**:
- The scala vestibuli is located at the top of the cochlea and is filled with a fluid called perilymph. It begins at the oval window, which is the membrane that connects the middle ear to the inner ear.

3. **Identify the Scala Tympani**:
- The scala tympani is located at the bottom of the cochlea and is also filled with perilymph. It terminates at the round window, which is another membrane that allows for the movement of fluid within the cochlea.

4. **Fill in the Blanks**:
- Based on the above understanding, we can fill in the blanks:
- The scala vestibuli ends at the **oval window**.
- The scala tympani terminates at the **round window**.

5. **Select the Correct Option**:
- Among the options provided, the second option states:
- A is oval window and B is round window.
- This is the correct answer.

### Final Answer:
The scala vestibuli ends at the **oval window**, while the scala tympani terminates at the **round window**.

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