Name the structure by which prevents the tongue from falling backward.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Question:** The question asks for the name of the structure that prevents the tongue from falling backward.

2. **Identifying the Tongue's Characteristics:** The tongue is a muscular organ that has the ability to move freely. It is important to understand that while it is flexible, it can potentially fall backward due to its weight and muscular nature.

3. **Locating the Relevant Structure:** There is a specific structure in the mouth that plays a crucial role in anchoring the tongue. This structure is located in the oral cavity.

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