1) __________________ system helps us to breathing process a) Inhaler b) Respiratory c) Transportation d) Red blood cell 2) ___________________ is the main organ in respiratory system a) Nose b) Nasal Cavity c) Lung d) Pharynx 3) The exchange of gas occurred at ____________________ in the lungs a) blood capillary b) Larynx c) Epiglotis d) Alveolus 4) ________________________ protect the lungs a) rib cage b) intercostal muscle c) diaphgram d) bronchus 5) _______________________ is the part that control the opening of trachea when swallowing and breathing a) Throat b) Larynx c) Epiglottis d) Diaphgram 6) _____________________ carry oxygen from alveolus and carry to all parts of organs. a) Blood capillary b) Wall of alveolus c) Red blood cell d) Wall of body cell 7) _____________________ pumps the blood to all parts of the body a) Heart b) Liver c) Lung d) Stomach 8) _______________________ is the harmful and toxic gas that dangerous for respiratory organs. a) Haze b) Dust c) Pollens d) Carbon monoxide 9) _____________________ produce when Oxygen + hemoglobin a) Carboxyhaemoglobin b) Oxyhaemoglobin c) Deoxygenated blood d) Red blood cell

Respiratory system

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