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