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What are the defl ections seen on an electrocardiogram trace due to?

waelhammad
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2022-10-22
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What are the defl ections seen on an electrocardiogram trace due to?

  1. pressure differences created by ventricular contraction.
  2. the closing and opening of heart valves.
  3. the de- and repolarisation of the cells of the myocardium.
  4. variation in the electrical properties of oxygenated blood and deoxygenated blood as it moves through the heart.
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waelhammad
2022-10-22
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C: the P wave is due to the depolarisation of the atria, the QRS to the depolarisation of the ventricles, the T due to the repolarisation of the ventricles. 

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