Solved UPSC CDS/OTA Question
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Q · Respiratory System medium · 45s
Which muscle assists with forced expiration?
TopicRespiratory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Forced expiration requires active contraction of internal intercostals to depress ribs and abdominal muscles to increase intra-abdominal pressure, pushing the diaphragm upward and expelling air forcibly.
Final Answer: Option C - Internal intercostals and abdominal muscles