In the absence of surfactants:
It is difficult to keep the alveoli open
Bronchioles relax
The alveoli fill with water
Air enters the intrapleural space
The Correct Answer is A
A. It is difficult to keep the alveoli open- surfactant reduces alveolar surface tension; without it, alveoli collapse (atelectasis).
B. Bronchioles relax- not directly related to surfactant.
C. The alveoli fill with water- surfactant prevents collapse, not water entry.
D. Air enters the intrapleural space- this would cause a pneumothorax, unrelated to surfactant function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
A. Trachea: The trachea is the beginning of the lower respiratory tract and conducts air to the bronchi.
B. Pharynx: The pharynx is part of the upper respiratory system.
C. Lungs: The lungs are the primary organs of the lower respiratory tract responsible for gas exchange.
D. Bronchial tree: The bronchial tree, including bronchi and bronchioles, is part of the lower respiratory system.
E. Larynx: The larynx is the uppermost structure of the lower respiratory system in some classifications but is more commonly considered part of the upper respiratory tract.
Correct Answer is B
Explanation
A. Bronchioles: Smaller branches that come after the bronchi.
B. Bronchi: Correct; the trachea divides into the right and left main (primary) bronchi.
C. Alveoli: Terminal ends of the respiratory tract where gas exchange occurs.
D. Nares: External nostrils, not connected directly to the trachea.
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