First slide

Circulatory Pathways

Question

ECG is a graphical representation of the

Easy

A

electrical activity of the heart
B

muscular activity of the heart
C

blood volume in the heart
D

pressure changes in the heart

Solution

ECG is a graphical representation of the electrical activity of the heart during a cardiac cycle. The electrical changes (depolarisation and repolarisation) lead to muscular activities (systole and diastole), which cannot be noticed on ECG.

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