the fused regions in the vertebral column of man are.

Options

A. Cervical , Lumbar
B. Lumbar , Sacral
C. Cervical , Sacral
D. Sacral , Coccygeal.

Answer

**Step-by-Step Solution:**

1. **Understanding the Vertebral Column**: The vertebral column, commonly known as the backbone, is a crucial structure in the human body that supports the body and allows for upright posture.

2. **Identifying the Regions of the Vertebral Column**: The vertebral column is divided into several regions:
- **Cervical Region**: Comprising 7 vertebrae located in the neck.
- **Thoracic Region**: Comprising 12 vertebrae located in the upper back.
- **Lumbar Region**: Comprising 5 vertebrae located in the lower back.
- **Sacral Region**: Comprising 5 fused vertebrae that form the sacrum.
- **Coccygeal Region**: Comprising 4 fused vertebrae that form the coccyx or tailbone.

3. **Identifying Fused Regions**: In the context of the question, we need to identify which regions of the vertebral column are fused.
- The **sacral vertebrae** are fused together to form the sacrum.
- The **coccygeal vertebrae** are also fused together to form the coccyx.

4. **Conclusion**: The fused regions in the vertebral column of humans are the **sacral and coccygeal vertebrae**.

5. **Correct Answer**: Therefore, the correct answer to the question is that the fused regions in the vertebral column of man are the **sacral and coccygeal vertebrae**.

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