A slow, deep, involuntary inspiration followed by a prolonged expiration that hyperinflates the lungs and re-expands atelectatic alveoli is a:
A) sigh.
B) hiccough.
C) grunt.
D) sneeze.

Question

Quizplus · Accepted Answer

This description matches that of a sigh, which is a deep breath followed by a prolonged exhale that helps to re-inflate collapsed alveoli in the lungs. Hiccoughs, grunts, and sneezes all involve different respiratory patterns and are not characterized by the specific features described here.

A Slow, Deep, Involuntary Inspiration Followed by a Prolonged Expiration