Q. ‘Electrocardiogram’ is an instrument to trace?

A
Electrical Activity of brain
B
Electrical and muscular activity of heart
C
Blood circulation
D
Electrical activity of Muscle
Solution:

An Electrocardiogram (ECG or EKG) is a test that checks how your heart is functioning by measuring the electrical activity of the heart. With each heart beat, an electrical impulse (or wave) travels through heart. This wave causes the muscle to squeeze and pump blood from the heart.

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