BODY SYSTEMS Human body is made up of many systems Body systems are made up of different organs and they perform specific functions The body systems include Skeletal, Respiratory, Nervous and Circulatory system. Circulatory System: Functions: Transports oxygen and nutrients throughout the body Skeletal System : made up of bones and muscle tissue Skull Rib cage Vertebrae Ulna Femur Functions: Gives shape and support to the body Protects the soft organs of the body Respiratory system: Functions: Helps us in breathing Nervous System: Functions: It's the control system of your body. It monitors what's going on inside and outside your body, and it helps you respond correctly.