When the smaller, upper atria chambers contract in the first phase of systole, they send blood down to the larger, lower ventricle chambers.
Atrial systole -- The atrium contracts, then the ventricle.
0.4sec
identify the portion of the ECG that represents the electrcal activity associated with atrial systole.
ventricular systole
The SA node makes the action potential for the heart. Atrial systole must occur after the action potential.
Relaxation = Diastole Contraction of the atria=Atrial systole Contraction of the ventricles = Ventricular systole
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).
No. Most (~70%) of ventricular filling occurs passively, without atrial contraction.
yes because during atria systole, the heart muscle tissue contracts.
70% the remaining 30% is pushed into the ventricles during atrial systole
During atrial systole, the SA node ( power house for heart to keep on beating) is unable to send signals to ventricles. But heart has some back up power houses which take over, so the ventricles can still keep on beating but at a slower rate than normal during atrial asystole.
atrial and ventricular systole occur at the same time