Which of the facial bone is unpaired

Options

A. Nasal
B. Zygomatic
C. palatine
D. Mandible

Answer

**Step-by-Step Solution:**

1. **Understanding Facial Bones**: Begin by identifying the facial bones in the human skull. The facial bones include the nasal bones, lacrimal bones, inferior nasal conchae, maxillae, palatine bones, zygomatic bones, and the mandible.

2. **Identifying Paired and Unpaired Bones**: Recognize that most of the facial bones are paired, meaning there are two of each (one on each side of the face). For example, the nasal bones, zygomatic bones, and maxillae are all present in pairs.

3. **Analyzing the Mandible**: The mandible, or lower jaw, is initially formed as two separate bones (right and left mandible) before birth. However, these two halves fuse together during the first year of life.

4. **Conclusion**: Since the mandible is the only facial bone that is unpaired in its adult form (as it is a single bone after fusion), it is identified as the unpaired facial bone.

5. **Final Answer**: The unpaired facial bone is the **mandible**.

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