Which of the following is a single U shaped bone present at the base of a buccal cavity and is intended in the skull ?

Options

A. Zygomatic
B. Hyoid
C. Mandible
D. Ethmoid

Answer

To solve the question "Which of the following is a single U-shaped bone present at the base of a buccal cavity and is intended in the skull?", we can follow these steps:

### Step 1: Understand the Question
The question is asking for a specific bone that is U-shaped, located at the base of the buccal cavity, and is part of the skull.

### Step 2: Analyze the Options
The options provided are:
1. Zygomatic
2. Hyoid
3. Mandible
4. Ethmoid

### Step 3: Evaluate Each Option
- **Zygomatic Bone**: This is known as the cheekbone and is not U-shaped. It is located below and lateral to the orbit.

- **Hyoid Bone**: This is a single U-shaped bone located at the base of the buccal cavity. It is also known as the tongue bone and serves as an anchoring structure for the tongue. It is indeed intended in the skull.

- **Mandible**: This is the largest bone in the human skull, forming the lower jaw. It is not U-shaped but rather has a more complex structure.

- **Ethmoid Bone**: This is an unpaired bone that separates the nasal cavity from the brain and is not U-shaped.

### Step 4: Identify the Correct Answer
Based on the analysis, the correct answer is the **Hyoid Bone**. It is the only bone that fits the description of being a single U-shaped bone at the base of the buccal cavity and is intended in the skull.

### Final Answer
The correct option is **Hyoid**.

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