The physiologic basis of electrocardiography is that

A The heart is an electrical dipole
B The heart is located in the center of Einthoven triangle
C The apices of Einthoven triangle is right arm (Rleft arm (Land right leg (R
D Lead I plus Lead 111 makes Lead II
E A-V nodal delay is 0.3 seconds

Correct Answer: The heart is an electrical dipole, The heart is located in the center of Einthoven triangle

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