Solved UPSC CDS/OTA Question
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Q · Respiratory System medium · 45s
In pulmonary ventilation, pleural pressure is:
TopicRespiratory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Intrapleural pressure (~–5 cmH₂O at rest) is subatmospheric and lower than alveolar pressure, creating a transpulmonary pressure that keeps alveoli inflated and aids lung expansion during inspiration.
Final Answer: Option B - Less than alveolar pressure