Solved UPSC CDS/OTA Question
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Q · Respiratory System Medium · 45s
Consider the following statements about the human respiratory system: 1. The primary muscle responsible for inspiration is the diaphragm. 2. During normal expiration, the process is passive due to the elastic recoil of the lungs. 3. Residual volume can be measured using a spirometer. Which of the statements given above is/are correct?
TopicRespiratory System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Q 1 / 30Next question →
Step-by-Step Solution
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The Diaphragm is the main inspiratory muscle. Expiration is passive during quiet breathing. Residual volume cannot be measured by spirometry.
Final Answer: Option A — 1 and 2 only