Which term describes the limb bones and girdles?

• A. Appendicular skeleton
• B. Axial skeleton
• C. Cranial skeleton
• D. Pelvic skeleton

Answer: (A)

The limb bones and their connection points to the body are part of the appendicular skeleton. This section includes the shoulder girdle and pelvis (the girdles) plus all the bones of the arms and legs, and it’s organized to support movement and mobility.

Why this fits best: the term specifically describes the components that make up the limbs and their attachments to the trunk, differentiating them from the central axis of the body. The axial skeleton covers the skull, spine, and rib cage—central support structures that aren’t primarily about limb movement. The cranial skeleton refers only to the skull bones. A pelvic skeleton isn’t a standard separate term for the whole limb-girdle system, since the pelvis is part of the pelvic girdle within the appendicular skeleton. So the correct description for limb bones and girdles is the appendicular skeleton.