Question

the humerus is the long bone that extends from the shoulder to the elbow. which skeletal system does the humerus belong to?
○ spongy skeleton
○ compact skeleton
○ axial skeleton
○ appendicular skeleton

Explanation:

The axial skeleton consists of the skull, vertebral column, rib cage, etc. The appendicular skeleton includes the bones of the limbs (arms, legs) and their girdles. The humerus is the bone of the upper arm (a limb), so it belongs to the appendicular skeleton. "Spongy skeleton" and "compact skeleton" refer to bone tissue types (spongy and compact bone), not skeletal system divisions.

Answer:

D. appendicular skeleton