Q.

Which of the following instrument is used for recording the sounds connected with the pumping action of the heart?

A. ECG
B. VCG
C. PCG
D. EEG
Answer» C. PCG
Explanation: The phonocardiograph is an instrument used for recording the sounds connected with the pumping action of the heart. These sounds provide an indication of the heart rate and its rhythmicity. They also give useful information regarding the effectiveness of blood pumping and valve action.
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