The portion of the ECG that corresponds to atrial depolarization is called the P wave. The P wave is the first wave on the ECG.
ECG records electrical activity and not mechanical, hence it has nothing to do with contraction. But P wave represents atrial depolarization.
The QRS complex is normally larger than the P Wave because depolarization of the larger muscle mass of the ventricles generates more voltage than does depolarization of the smaller muscle mass of the atria
An ECG is obtained from a patient with a few (Possibly 6 or 8) Sticky pads, that are connected to the wires, connected to the ECG itsself, that are stuck onto the body in different places. These can read the heartrate and record it onto the ECG monitor and they will be printed off by a special printer.
the electrocardiograph
heart disease
The P wave on ECG corresponds to electrical depolarization of the atria. It should be positive in lead II and negative in aVR when the P wave originates in the sinoatrial node.
The P wave.
depolarization of atrial muscle fibers
The atrial repolarization occurs during the QRS complex of the ECG but is obscured by the ventricle depolarization.
identify the portion of the ECG that represents the electrcal activity associated with atrial systole.
ECG records electrical activity and not mechanical, hence it has nothing to do with contraction. But P wave represents atrial depolarization.
Atrial depolarization occurs at the P wave. The atrial contraction occurs at the peak of the wave at the influx of calcium ions to prolong depolarization.
The P-wave corresponds to atrial depolarisation.The QRS complex corresponds to ventricular depolarisation.The T-wave corresponds to ventricular repolarisation.
Atrial repolarization coincides with the QRS complex on the ECG. The T-wave corresponds to Ventricular repolarization. 'with tHE t-wave' <-- WRONG
P wave - represents atrial depolarization (contraction) QRS complex - ventricular depolarization T wave - ventricular repolarization (relaxation) atrial repolarization is "buried" within the QRS Complex
It is on page 374 of your lab book assuming this is the same question that came out Lab 28 in the Ninth Edition of Seeley's Anatomy & Physiology. The atrial repolarization occurs during ventricualr depolarization and is masked by the larger QRS complex. I actually did my homework :)
P waves represent the atrial depolarization. QRS complex represent the ventricular depolarization. T waves represent the ventricular repolarization.