Which skeleton forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones?

Which skeleton forms the extremities and is composed of the shoulder girdle, arm bones, pelvic girdle, and leg bones?

• A. Axial Skeleton
• B. Appendicular Skeleton
• C. Spongy Bone
• D. Innervated

Answer: (B)

The appendicular skeleton is the part of the skeleton that forms the limbs and the girdles that attach them to the axis of the body. It includes the shoulder girdle, the bones of the arm, the pelvic girdle, and the bones of the legs. This contrasts with the axial skeleton, which supports the trunk and includes the skull, spine, and rib cage. Spongy bone is a type of bone tissue found inside many bones, not a skeletal division, and innervated refers to nerve supply, not bone structure. So, the description of girdles plus the upper and lower limbs fits the appendicular skeleton best.

The appendicular skeleton is the part of the skeleton that forms the limbs and the girdles that attach them to the axis of the body. It includes the shoulder girdle, the bones of the arm, the pelvic girdle, and the bones of the legs. This contrasts with the axial skeleton, which supports the trunk and includes the skull, spine, and rib cage. Spongy bone is a type of bone tissue found inside many bones, not a skeletal division, and innervated refers to nerve supply, not bone structure. So, the description of girdles plus the upper and lower limbs fits the appendicular skeleton best.