Name the fluid in which the membranous labyrinth of the inner ear floats.

Explanation

To answer the question, "Name the fluid in which the membranous labyrinth of the inner ear floats," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Inner Ear**: The inner ear consists of two main parts: the cochlea and the vestibular apparatus. The cochlea is involved in hearing, while the vestibular apparatus is responsible for balance.

2. **Identify the Membranous Labyrinth**: The membranous labyrinth is a system of fluid-filled sacs and ducts located within the bony labyrinth of the inner ear.

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