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lab practical

QuestionAnswer
Repolaration when the potassium goes out
P Wave atrial depolarization cells in SA nodes; signal for contraction for atrial node no p signal no contraction
QRS ventricular depolarization; produces a bigger signal for the contraction of ventricles
T Wave ventricular repolarization; the rest button
PR Interval allows atria to contract before ventricles can't be too short or too long so the heart doesn't have to overwork
QRS interval needs to be a quick signal
QT interval how long it takes to signal and reset signal (how fast the heart rate can go)
Normal heart rate 60-100
Sinus bradycadia less than 60
Sinus Tachycardia more than 100
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