On a Normal ECG, a Wave for Repolarization of the Atria

question 206

Multiple Choice

On a normal ECG, a wave for repolarization of the atria is not recorded.Why?

• A)The leads are not placed in a position to pick it up.
• B)No repolarization of the atria occurs normally.
• C)It occurs simultaneously with ventricular depolarization and is masked by the QRS complex.
• D)It does not travel through body fluids.
• E)It is too small to be picked up by external recording electrodes.

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