Solved UPSC CDS/OTA Question
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Q · Respiratory System medium · 45s
The transition from conducting to respiratory zone occurs at:
TopicRespiratory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Respiratory bronchioles are the first airway segments with alveoli in their walls, marking the start of the respiratory zone where gas exchange begins alongside continued conduction.
Final Answer: Option B - Respiratory bronchioles