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The symphysis pubis is a significant anatomical feature within the appendicular skeleton, as it serves as the joint that connects the two sides of the pelvis. It comprises fibrocartilaginous tissue, which allows for slight movements that can be important during activities such as walking or childbirth. The appendicular skeleton is primarily associated with the limbs and the structures that support them, including the pelvis.

In contrast, the sternum is part of the axial skeleton, functioning as a central structure for rib attachment, while the skull consists of bones that protect the brain and form the structure of the face, also categorized under the axial skeleton. The vertebrae, forming the spinal column, similarly belong to the axial skeleton, providing support and protection for the spinal cord. Together, these structures highlight the distinction between axial and appendicular components of the skeletal system, affirming that the symphysis pubis plays a crucial role within the appendicular framework.