Solved UPSC CDS/OTA Question
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Q · Respiratory System medium · 45s
The conducting zone ends and the respiratory zone begins at:
TopicRespiratory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The respiratory bronchioles are the first airway passages where gas exchange occurs due to the presence of alveolar outpouchings, distinguishing them from purely conducting airways.
Final Answer: Option D - Respiratory bronchioles