Skeleton and Muscles

Your skeleton is made of 206 bones that give your body its shape and hold you up! Without bones, you would be like a jellyfish — a pile of squishy stuff on the floor! Your skull protects your brain like a helmet. Your ribs form a cage that protects your heart and lungs. Your spine (backbone) is a stack of 33 bones that lets you bend and twist. Bones are strong — stronger than concrete for their weight!