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