Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
How does the appendicular skeleton differ from the axial skeleton?The axial skeleton includes just the skull, the sternum, the ribcage, and the vertebraic column, while the appendicular skeleton includes everything else. The axial skeleton are the bones that lie around the longitudinal axis of the human body (from top to tail). This includes the skull, ribs, sternum, and vertebral column.