1) Tube that connects the nose to the lungs a) Diaphragm b) Trachea c) Mouth d) Lungs 2) Gas you breathe out when you exhale a) Carbon Dioxide b) Oxygen c) Gasoline d) Methane 3) How is oxygen carried round the body a) Lungs b) Blood c) Air d) Skin 4) Bags which fill with air during inhalation a) Lungs b) Bronchi c) Alveoli d) Heart 5) Air travels down the trachea into the... a) Pharynx b) Larynx c) Bronchi d) Bronchioles

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