This facial bone is unpaired

Options

A. vomer
B. nasal
C. lacrimal
D. palatine

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks for an unpaired facial bone.

2. **Understand Facial Bones:** Facial bones are the bones that form the structure of the face. Most of these bones are paired, meaning there are two of each (one on each side of the face).

3. **List Common Facial Bones:** Some common facial bones include the maxilla, mandible, nasal bones, lacrimal bones, and palatine bones.

4. **Determine Which Bones are Paired:**
- Maxilla: paired (two maxillae)
- Mandible: unpaired (only one mandible)
- Nasal bones: paired (two nasal bones)
- Lacrimal bones: paired (two lacrimal bones)
- Palatine bones: paired (two palatine bones)

5. **Identify the Unpaired Bone:** Among the listed bones, the only unpaired bone is the vomer.

6. **Location of the Vomer:** The vomer is located in the nasal cavity and forms part of the nasal septum.

7. **Conclusion:** The answer to the question is the vomer, as it is the only unpaired facial bone.

**Final Answer:** The unpaired facial bone is the vomer.

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