Which of the following body structures is infected then a child has croup?
a. epiglottis c. alveoli, bronchioles, and pleura
b. lungs d. larynx, trachea, and large bronchi
D
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A Incorrect. The epiglottis is not infected then a child has croup.
B Incorrect. The large bronchi of the lungs are infected then a child has croup, but not the entire lung.
C Incorrect. The alveoli, bronchioles, and pleura are not infected then a child has croup.
D Correct. Croup is a common viral syndrome manifested by a croupy or "barking" cough, inspiratory stridor, and some degree of respiratory stress. The syndrome is an infection of the larynx, trachea, and large bronchi, i.e., the upper respiratory system.
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