1) Lungs a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 2) Arteries a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 3) Veins a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 4) Heart a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 5) Kidneys a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 6) Mouth a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 7) Bladder a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 8) Stomach a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 9) Blood a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 10) Intestine a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 11) Nose a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System 12) Trachea a) Digestive System b) Respiratory System c) Circulatory System d) Excretory System

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