Consider the given statements regarding the human vertebral column:
| I: |
In adults, it is differentiated into cervical [7], thoracic [12], lumbar [5], sacral [1-fused] and coccygeal [1-fused] regions. |
| II: |
The first vertebra is called as axis and it articulates with the occipital condyles. |
| III: |
The spinal cord runs through a neural canal. |
| IV: |
It protects the spinal cord, supports the head and serves as the point of attachment for the ribs and musculature of the back. |
The correct statements include:
| 1. |
Only I |
2. |
Only I and IV |
| 3. |
Only II and III |
4. |
Only I, III, and IV |