Question

Centrum is absent in

• A. Atlas vertebra
• B. Typical vertebra
• C. Sacral vertebra
• D. Ninth vertebra

Answer 1

The correct option is A Atlas vertebra

Centrum is the central mass of the body of a vertebra. Centrum provides strength to a vertebra and usually connects one vertebra with another. The atlas vertebrae are the only vertebrae which do not have centrum. During development, the centrum of atlas vertebra gets fused with the centrum of the axis. So the holes of the axis vertebra compose the body of the atlas vertebra. So, the correct answer is 'Atlas vertebra'.