What is the main function of the respiratory system?, A. Pump blood, B. Digest food, C. Exchange gases, D. Produce hormones, Which organ carries air to the lungs?, A. Trachea, B. Oesophagus, C. Heart, D. Liver, What are bronchi?, A. Tiny blood vessels, B. Tubes leading to the lungs, C. Air sacs, D. Muscles used in breathing, Where does gas exchange occur?, A. Trachea, B. Bronchi, C. Alveoli, D. Diaphragm, What gas moves from the alveoli into the blood?, A. Nitrogen, B. Oxygen, C. Carbon dioxide, D. Hydrogen, What gas moves from the blood into the alveoli?, A. Carbon dioxide, B. Oxygen, C. Nitrogen, D. Helium, What process causes gases to move across alveoli walls?, A. Digestion, B. Circulation, C. Diffusion, D. Respiration, Which structure helps breathing by moving up and down?, A. Septum, B. Alveoli, C. Bronchi, D. Diaphragm, What happens to the diaphragm during inhalation?, A. It relaxes, B. It contracts, C. It disappears, D. It hardens, What happens to the chest cavity during inhalation?, A. It gets smaller, B. It stays the same, C. It fills with blood, D. It gets larger, During exhalation, the ribs move:, A. Up and out, B. Down and in, C. Sideways, D. Forward, Why are alveoli efficient for gas exchange?, A. They contain muscles, B. They are filled with blood, C. They have thick walls, D. They have a large surface area, Which statement about alveoli is correct?, A. They have thick walls, B. They contain food, C. They have thin walls, D. They pump blood, Which disease narrows the airways?, A. Diabetes, B. Asthma, C. Cancer, D. Anaemia, Smoking damages which organs?, A. Kidneys, B. Sraka, C. Lungs, D.Piska, Smoking increases the risk of:, A. Lung disease, B. Broken bones, C. Blindness, D. Tooth decay only, What is inhalation?, A. Breathing air into the lungs, B. Breathing air out of the lungs, C. Pumping blood, D. Digesting food, What is exhalation?, A. Taking oxygen into blood, B. Breathing air out of the lungs, C. Moving food through the body, D. Pumping blood to the lungs, Which organ prevents food entering the trachea?, A. Alveoli, B. Epiglottis, C. Bronchi, D. Diaphragm, Why does breathing rate increase during exercise?, A. To cool the body, B. To digest food faster, C. To supply more oxygen to muscles, D. To slow the heartbeat, Which two structures are part of the respiratory system?, A. Lungs, B. Kidneys, C. Trachea, D. Stomach, Which two gases are involved in gas exchange?, A. Oxygen, B. Carbon dioxide, C. Hydrogen, D. Helium, Which two statements about alveoli are correct?, A. They have thin walls, B. They are found in the stomach, C. They have a large surface area, D. They pump blood, Which two things happen during inhalation?, A. Diaphragm contracts, B. Chest cavity gets larger, C. Ribs move down and in, D. Air leaves the lungs, Which two things happen during exhalation?, A. Air leaves the lungs, B. Chest cavity gets smaller, C. Diaphragm contracts, D. Ribs move up and out, Which two structures carry air into the lungs?, A. Bronchi, B. Trachea, C. Veins, D. Oesophagus, Which two are effects of asthma?, A. Narrowed airways, B. Difficulty breathing, C. Stronger lungs, D. Increased oxygen in blood, Which two statements about diffusion are correct?, A. Gases move from high to low concentration, B. Oxygen diffuses into the blood, C. Blood diffuses into alveoli, D. Diffusion only happens in the heart

Respiratory System

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