1) intestines a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 2) the control center of the body a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 3) esophagus a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 4) blood a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 5) carries nutrients and oxygen through the body a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 6) spinal cord and nerves a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 7) mouth a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 8) heart a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 9) controls all other body systems a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 10) Brings oxygen into the body a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 11) brain a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 12) sends messages and signals throughout the body a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 13) arteries and veins a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 14) breaks down food a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System 15) stomach a) Digestive System b) Circulatory System c) Nervous System d) Respiratory System

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