Axial Skeleton Bones Identification

The axial skeleton forms the central axis of the body and includes the bones of the head, neck, and trunk. It provides protection for vital organs like the brain and heart.

Analyzing Bone Classifications

We need to identify which of the given bone groups belong to the axial skeleton:

• A. Skull: Forms the head and protects the brain. It is a major component of the axial skeleton.
• B. Ribs: These bones form the rib cage, protecting the thoracic organs. They are part of the axial skeleton.
• C. Sternum: Located in the center of the chest, the sternum (breastbone) articulates with the ribs. It is part of the axial skeleton.
• D. Metacarpals: These are the bones in the palm of the hand. They are part of the appendicular skeleton, not the axial skeleton.
• E. Tarsals: These bones form the ankle and posterior part of the foot. They are part of the appendicular skeleton, not the axial skeleton.

Conclusion on Axial Bones

Based on the analysis, the bones belonging to the axial skeleton from the options provided are the Skull (A), Ribs (B), and Sternum (C).

Therefore, the correct combination is A, B, C only.