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Cardio
Lecture 3
7
Physiology
Undergraduate 2
02/27/2011
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Term
autorhythmic cells
 Definition
Funny channels open/close
Ca channels open/close
K channels open/close
Term
sympathetic effect on HR
 Definition
increase HR, increase Funny channels, reach threshold quicker
Term
contractile cell
 Definition
Na open/close
Ca open/fast K close-plateau
Ca close/slow K open-brings next depolarization
Term
plateau
 Definition
maintained by calcium permeability
Term
p wave
 Definition
atria depolarization
Term
QRS
 Definition
depolarization of ventricles
atrial repolarization
Term
T wave
 Definition
ventricular repolarization
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