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rosalynnx3
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which limb lear is ground
RL
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one small square=
1mm = .04 sec
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ine large square =
5mm = .20sec
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define polarized
the heart at rest. no impulse,stimulation,contraction,and no measurable activity
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define depolarization
also means dischrage of electrical energy, or activity of the heart during impulse thast causes contraction the contracytion itself. this impulse can be measured by ECG
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