Which one of the following is showing the correct sequential order of vertebrae in the vertebral column of human beings ?

Options

A. Cervical- lumbar- thoracic- sacral - coccygeal
B. Cervical- thoracic- sacral-lumbar- coccygeal
C. Cervical- sacral - thoracic-lumbar- coccygeal
D. Cervical- thoracic- lumbar- sacral- coccygeal

Answer

To determine the correct sequential order of vertebrae in the vertebral column of human beings, we need to understand the arrangement of different types of vertebrae. The vertebral column is divided into several regions, each consisting of a specific number of vertebrae.

1. **Identify the regions of the vertebral column**:
- The human vertebral column is divided into five main regions:
- **Cervical**: This region consists of 7 cervical vertebrae (C1 to C7).
- **Thoracic**: This region consists of 12 thoracic vertebrae (T1 to T12).
- **Lumbar**: This region consists of 5 lumbar vertebrae (L1 to L5).
- **Sacral**: This region is formed by the sacrum, which consists of 5 fused vertebrae.
- **Coccygeal**: This region consists of the coccyx, which is formed by 3 to 5 fused vertebrae.

2. **Determine the correct order**:
- The correct sequential order of the vertebrae in the human vertebral column is:
1. Cervical (C1-C7)
2. Thoracic (T1-T12)
3. Lumbar (L1-L5)
4. Sacral (5 fused vertebrae)
5. Coccygeal (3-5 fused vertebrae)

3. **Match the order with the options provided**:
- Now, let's analyze the options given in the question:
- **Option A**: Cervical, Lumbar, Thoracic, Sacral, and Coccygeal. (Incorrect order)
- **Option B**: Cervical, Thoracic, Sacral, Lumbar, and Coccygeal. (Incorrect order)
- **Option C**: Cervical, Sacral, Thoracic, Lumbar, and Coccygeal. (Incorrect order)
- **Option D**: Cervical, Thoracic, Lumbar, Sacral, and Coccygeal. (Correct order)

4. **Conclusion**:
- Based on the analysis, the correct sequential order of vertebrae in the vertebral column of human beings is **Option D**: Cervical, Thoracic, Lumbar, Sacral, and Coccygeal.