Final answer:
The two main divisions of the skeleton are the axial and appendicular skeletons. The axial skeleton includes the skull, vertebral column, and thoracic cage, while the appendicular skeleton includes the limbs and girdles that attach the limbs to the axial skeleton.
Step-by-step explanation:
The two main divisions of the skeleton are the axial and appendicular skeletons. The axial skeleton forms the central axis of the body and includes the skull, vertebral column, and thoracic cage. On the other hand, the appendicular skeleton includes the limbs and girdles that attach the limbs to the axial skeleton.