Matching Pairs Human Body Systems Interactions - MATCHING - PART IOnline version Human Body Systems Interactions - Matching by Benjamin D Morgan 1 gets nutrients out of food to help the kidneys 2 brings oxygen to give to the red blood cells and also get carbon dioxide from the red blood cells 3 brings oxygen into the body that will be delivered to the small intestine 4 delivers gases and nutrients to the brain 5 helps control the speed food is broken down 6 sends messages to let body know the bladder is full 7 sends messages to bring oxygen in and carbon dioxide out 8 The variable we measure in an experiment. 9 The variable we keep the same in an experiment 10 brings oxygen into the body to give to the muscles 11 brings oxygen into the body to give to the kidneys 12 sends messages to make the heart beat 13 get nutrients out of food that help the heart 14 gets nutrients out of food that help the brain 15 The variable we change in an experiment. 16 brings oxygen into the body that will be delivered to the brain 17 gets nutrients (protein) out of food to help the muscles Dependent Variable Controlled Variable Independent Variable