Dysrhythmia Stuff AHN 447 (updated 2024) || with 100% Errorless Answers.

We want the sinus node pacing the heart. Depolarization- _______ Repolarization- ________ and refilling correct answers Contraction; relaxing At rest there is a _____ charge inside the cell and a positive charge outside the cell Na+ is most plentiful ______ the cell and K+ is most plentiful inside the cell. When the muscle depolarizes Na rushes ___ and K rushes ___ in a wave pattern correct answers negative; outside; in; out For a cell to depolarize it must be ______ stimulated and the ions (K and Na) must change places. Repolarization is the ions going back to their normal _____ state (K in and Na out) This is a slower movement than depolarization (rapid movement) Absolute refractory means excitability is ______ and we cannot stimulate it to depolarize correct answers electrically; resting; zero Primary pace-maker is the SA node -Normal rate is ___-____ The second pacemaker is the AV node -Normal rate for AV node is ___-___ The last pace maker is the purkinje fibers -Rate of __-__ correct answers 60-100 ; 40-60; 20-40 P-wave= atrial depolarization -Right at the end of diastole the atria contract "____ ____" -30% of CO comes from atrial kick AV node slows down the impulse for ______ filling. The flat part is where atrial contraction occurs is also where the AV node is holding onto that impulse to allow for ventricular filling QRS= ventricular depolarization. -As soon as they depolarize they have to contract whether they are full or not.