1) What are the tiny air sacs in the lungs called? a) Bronchioles b) Alveoli c) Capillaries 2) what structures go after the trachea? a) The bronchi b) The bronchioles c) The pleural membranes 3) What happens when we exhale ? a) The diaphragm contracts and moves upwards b) The diaphragm relaxes and moves upwards c) The diaphragm relaxes and moves downwards 4) What happens during gas exchange in the lungs? a) Oxygen passes into the blood and carbon dioxide passes out of the blood b) Oxygen passes out of the blood and carbon dioxide passes into the blood c) Oxygen and carbon dioxide pass into the blood 5) Which of these signs shows increased work of breathing? a) Flail segments b) Chest indrawing c) Wheezing 6) During exercise, what happens to breathing in humans? a) The depth of breathing increases and the breathing rate increases b) The breathing rate increases but not the depth of breathing c) The depth of breathing increases but not the breathing rate 7) Which is the main muscle of respiration? a) Liver b) Diaphragm c) Esophagus 8) When you breathe in air, you bring oxygen into your lungs and blow out: a) Carbon dioxide b) Oxygen c) Carbon monoxide 9) As you breathe, this contracts and flattens to give your lungs room to fill up with air: a) Lung balloon b) Diaphragm c) Bronchiole 10) What procedure is the thoracostomy tube used in? a) Head trauma b) Poisoning c) Massive hemothotax

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