Solved UPSC CDS/OTA Question
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Q · Circulatory Systemmedium · 45s
What part of ECG corresponds to atrial depolarization?
TopicCirculatory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The P wave reflects depolarization of atrial myocardium initiated by the SA node. QRS complex represents ventricular depolarization; T wave indicates ventricular repolarization.
Final Answer: Option A - P wave