Which term describes the central axis of the skeleton including the skull, spine, and rib cage?

• A. Axial skeleton
• B. Appendicular skeleton
• C. Central skeleton
• D. Core skeleton

Answer: (A)

The axial skeleton describes the central axis of the skeleton. It includes the skull, vertebral column, and rib cage, forming the main vertical axis that supports the head and trunk and protects vital organs like the brain, spinal cord, heart, and lungs. This is why it’s the best answer for describing the central axis of the skeleton.

The other terms don’t fit as well. The appendicular skeleton consists of the limbs and their girdles, which are the parts extending away from this central line. Central skeleton and core skeleton aren’t standard anatomical terms for the building blocks of the skeleton.