1) What role does the nose play in the respiratory system? a) It is the tube to the lungs. b) It takes in carbon dioxide for the body. c) It is the entrance to the respiratory system. 2) What muscle supports the movement of the lungs? a) Trachea b) Diaphragm c) Ribcage 3) When you inhale, your lungs __________ a) Contract b) Stay the same c) Expand 4) What is a waste product of the respiratory system? a) Carbon dioxide b) Oxygen c) Pee 5) What is used in the nose and trachea to help trap dust and bacteria? a) Water b) Mucus c) Muscles 6) When we created a model of the respiratory system, what did we use to represent the diaphragm and lungs? a) Plastic cup b) Straws c) Balloons 7) What protects our lungs? a) Ribcage b) Diaphragm c) Muscles

Respiratory System

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