Ch. 17, The Respiratory System - Video Quiz (The Amoeba Sisters)Online version Watch the video and answer the questions at the end. by Tania Hurlbutt 1 Gas exchange between air in the lungs and the blood happens in the: a Alveoli b Trachea c Larynx d Bronchi 2 Which structure acts as a switch to send food away from the airway and air toward the lungs? a Epiglottis b Trachea c Bronchi d Pharynx 3 What is the primary job of the respiratory system? a To bring in oxygen and expel carbon dioxide b To generate heat for the body c To remove waste from the digestive system d To carry nutrients to body cells 4 Which muscle plays the major role in inhalation (breathing in)? a Intercostal muscles b Diaphragm c Epiglottis d Bronchioles 5 After air passes through the trachea, it next enters: a Larynx b Bronchi c Alveoli d Tissue capillaries 6 The video describes that the lungs are full of many tiny sacs called: a Alveoli b Bronchi c Capillaries d Bronchioles 7 Why is the respiratory system closely linked with the circulatory (blood) system? a It pumps blood b It filters blood c It supplies oxygen to blood and removes carbon dioxide from it d It produces white blood cells 8 What happens when the diaphragm relaxes? a The chest cavity volume decreases and air is pushed out b The trachea closes c The epiglottis opens d The chest cavity volume increases
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