The walls of the alveoli
A. are composed of simple squamous epithelium.
B. contain several layers of smooth muscle.
C. contain goblet cells.
D. are surrounded by cartilage.
E. are ciliated.
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Question 2) When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.
A. longer
B. thinner
C. more vertical
D. less ciliated
E. shorter
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Question 3) What is the function of the ciliated epithelium of the tracheobronchial tree?
A. to cause coughing
B. a mucus-cilia escalator
C. move dirt toward the alveoli
D. All of the choices are correct
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Question 4) From largest to smallest, the correct sequence for the following passageways is
A. bronchi, bronchioles, respiratory bronchioles, terminal bronchioles, alveoli.
B. bronchioles, terminal bronchioles, respiratory bronchioles, bronchi, alveoli.
C. alveoli, bronchioles, terminal bronchioles, respiratory bronchioles, bronchi.
D. bronchi, bronchioles, terminal bronchioles, respiratory bronchioles, alveoli.
E. terminal bronchioles, respiratory bronchioles, bronchi, bronchioles, alveoli.
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Question 5) The diameter of bronchioles can change because their walls contain
A. smooth muscle.
B. skeletal muscle.
C. fibrous cartilage.
D. hyaline cartilage.
E. elastic cartilage.
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Question 6) Constriction of smooth muscle in the bronchioles
A. occurs during periods of exercise.
B. restricts the flow of air into the lungs.
C. decreases ciliary action.
D. increases airflow out of the lungs.
E. does not affect airflow.
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Question 7) Gas exchange between the air in the lungs and the blood takes place in the
A. alveoli.
B. primary bronchi.
C. terminal bronchioles.
D. trachea.
E. respiratory bronchi.
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Question 8) Of the following structures, the largest in diameter is the
A. primary bronchus.
B. secondary bronchus.
C. respiratory bronchiole.
D. trachea.
E. tertiary bronchus.
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Question 9) Arrange the following structures in the order air passes through them during inhalation: (1) alveolar ducts (2) alveolus (3) respiratory bronchiole (4) terminal bronchiole
A. 1, 2, 3, 4
B. 2, 1, 3, 4
C. 4, 3, 1, 2
D. 3, 2, 1, 4
E. 4, 3, 2, 1
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Question 10) Each lobe of each lung is supplied by a
A. primary bronchus.
B. secondary bronchus.
C. tertiary bronchus.
D. bronchiole.
E. segmental bronchus.
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