What are the names of the two sacs that lie in the vestibule?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Vestibule**: The vestibule is a part of the inner ear located between the semicircular canals and the cochlea. It plays a crucial role in balance and spatial orientation.

2. **Identifying the Sacs**: Within the vestibule, there are two membranous sacs. These sacs are essential for detecting changes in head position and maintaining balance.

3. **Naming the Sacs**: The two sacs located in the vestibule are called the **utricle** and the **saccule**.

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