Here's why:

* Axial Skeleton: This is the central axis of the skeleton, including the skull, vertebral column (spine), and rib cage. It provides support and protection for vital organs.

* Tarsals: These are the bones of the ankle and foot. They are part of the appendicular skeleton, which includes the limbs and their girdles (shoulder and pelvic).

Therefore, the tarsals are part of the appendicular skeleton, not the axial skeleton.