Which of the following facial bones is not a paired bone?a. Maxillab. Palatinec. Vomerd. Lacrimal

Step 1: Break Down the Problem

To identify which of the listed facial bones is not a paired bone, we need to understand which facial bones are considered paired (meaning there are two of them) and which are not.

Step 2: Relevant Concepts

Facial bones can be categorized into paired and unpaired bones:

• Paired facial bones: Maxilla, Palatine, Zygomatic, Nasal, Lacrimal
• Unpaired facial bones: Mandible, Vomer, and Nasal (only listed once)

Step 3: Analysis and Detail

Now let's analyze the given options:

1. Maxilla - this is a paired bone (two maxillae)
2. Palatine - this is a paired bone (two palatine bones)
3. Vomer - this is an unpaired bone (only one vomer)
4. Lacrimal - this is a paired bone (two lacrimal bones)

Step 4: Verify and Summarize

From our analysis, we see that the only unpaired bone among the options is the vomer.

Final Answer

The facial bone that is not a paired bone is c. Vomer.