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What else can I help you with?
In a normal ECG tracing?
the repolarization of the atria is hidden by the QRS wave
Which part of the QRS complex represents the repolarization of the atria?
Which part of the QRS complex represents the repolarization of the atria?A.The Q waveB.The R waveC.The S waveD.None of the aboveThe S wave
Before a muscle cell can be stimulated to contract again what must occur?
Repolarization
What are the 3 components of the ECG trace?
The EKG or ECG components are the P wave (contraction of the atria), the QRS complex (the contraction of the ventricles) and the T wave (repolarization of the ventricles).
Where does the exchange of food and wastes occur?
Capillaries
What is the stage in an action potential that immediately follow depolarisation?
The stage that immediately follows depolarization in an action potential is repolarization. During repolarization, potassium ions move out of the cell, causing the membrane potential to return to its resting state.
Why do not action potentials occur during the repolarization phase?
It has to do with what types of channels are open during this phase. In the repolarization phase the number of potassium channels are increased and the number of sodium channels are decreased. This allows for action potentials to not occur. Otherwise, the action potentials would add up and produce tetany.
Repolarization of a ventricular cardiocyte taks longer then repolarization of a typical neuron?
yes
What is the portion of the ECG that indicates ventricular repolarization?
The wave indicating atrial repolarization wave is hidden by the QRS complex. Ventricular repolarization is indicated by the T wave.
What rhythm do the P waves represent?
The P waves represent the electrical activity that causes the atria to contract in the heart. They occur before the QRS complex on an electrocardiogram (EKG) and signify the depolarization of the atria.
Atrial repolarization coincides in time with?
the ventricular depolarization, which masks the atrial repolarization wave on the electrocardiogram. This is because the QRS complex is much larger than the atrial repolarization wave and overlaps with it, making it difficult to distinguish on the ECG.
Does the p wave in an ekg indicate atrial depolarization?
No it does not. Atrial repolarization is generally not visible on the telemetry strip because it happens at the same time as ventricular depolarization (QRS complex). The P wave represents atrial DEpolarization (and atrial systole). Atrial repolarization happens during atrial diastole (and ventricular systole).
