Which is part of the appendicular skeleton?

• A. Skull and vertebral column
• B. Ribs and sternum
• C. Arms and legs
• D. Pelvis and skull

Answer: (C)

The appendicular skeleton consists of the bones of the limbs and the girdles that attach them to the axial skeleton (shoulder and hip girdles). Arms and legs are the primary components of the limbs, so this option correctly identifies the part of the appendicular skeleton. The skull, vertebral column, ribs, and sternum belong to the axial skeleton, and while the pelvis is part of the appendicular system, the skull part of that option is axial, making it not a pure match for the appendicular skeleton.