During which of the following age periods does a child have the most limited alveolar surface for gas exchange in relation to height and weight?
a. infancy c. preschool years
b. toddler years d. school-age years
A
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A Correct. An infant has a more limited alveolar surface for gas exchange, in relation to height and weight, than at any other stage in life.
B Incorrect. The toddler's alveolar surface has expanded, and is less limited than an infant's.
C Incorrect. The preschooler's alveolar surface has expanded, and is less limited than an infant's.
D Incorrect. School-aged children's alveolar surface has expanded, and is less limited than an infant's.
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