1) Tube that connects the nose to the lungs a) Diaphragm b) Larynx c) Epiglottis d) Trachea 2) Gas you breathe out when you exhale  a) carbon dioxide b) oxygen c) gasoline d) methane 3) Alveoli are surrounded by thin-walled blood vessels called... a) veins b) capillaries c) arteries d) channels 4) How is oxygen carried round the body? a) lungs b) air c) blood d) skin 5) Bags which fill with air during inhalation a) lungs b) bronchi c) alveoli d) heart 6) air travels down the trachea into the... a) pharynx b) larynx c) bronchi d) bronchioles 7) which is not a product of respiration? a) carbon dioxide b) water c) energy d) methane 8) Which structure does air NOT travel through on its way to the lungs? a) bronchi b) trachea c) heart d) larynx 9) The layer above the cilia of the alveoli a) snot b) mucus c) saliva d) more cilia 10) Structure that is also known as the windpipe... a) larynx b) trachea c) pharynx d) mouth 11) Gaseous exchange takes place in which structure? a) bronchioles b) capillaries c) veins d) alveoli 12) Large dome-shaped muscle that controls breathing... a) lung b) diaphragm c) intercostal muscle d) Gluteus maximus

Respiratory system

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