Which bone is part of the axial skeleton?

The skull is a crucial component of the axial skeleton, which primarily serves to support the head, protect the brain, and house the structures related to the sensory organs. The axial skeleton includes the skull, vertebral column (spine), and rib cage, forming the central axis of the body. The skull consists of various bones that encase and protect the brain and form the basic structure of the face.

In contrast, the femur is part of the appendicular skeleton, which includes bones of the limbs and girdles. The sternum, while part of the axial skeleton, is not the only focus in this context. The radius, like the femur, is also part of the appendicular skeleton, linking it to the limbs. Understanding the distinction between the axial and appendicular skeleton is essential in anatomy as it provides insight into the organization and function of the skeletal system.