0
about 0.1 seconds
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∙ 13y ago
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What is the stage of the cardiac cycle which precedes the resting period?
atrial systole <---- might be wrong
Immediately before the P wave?
The electrical milestone event that occurs at the P wave of the cardiac cycle of the EKG is atrial depolarization. The upward stroke is right atrial depolarization, and the downward stroke is left atrial depolarization. Normally, this lasts for no more than 0.11 sec.
What does systole refer to?
The period of time marked by contraction of the ventricles
Atrial repolarization coincides in time with?
Atrial repolarization coincides with the QRS complex on the ECG. The T-wave corresponds to Ventricular repolarization. 'with tHE t-wave' <-- WRONG
What are some similarities and differences between historical time and a time interval?
Similarities : They both tell time, and mark time. Differences : Historical time is more specific, and time interval can be any piece of time in the world.
What is the time taken by atrial systole and ventricular systole?
0.4sec
Who comes first atrial systole or ventricle systole?
Atrial systole -- The atrium contracts, then the ventricle.
Which part is atrial systole in ECG?
identify the portion of the ECG that represents the electrcal activity associated with atrial systole.
Is the blood pressure in systemic arteries greatest during atrial systole or ventricular systole?
ventricular systole
Does atrial systole occur before or after the firing of the sinoatrial node?
The SA node makes the action potential for the heart. Atrial systole must occur after the action potential.
What is the pumping tissue of the heart called?
atrial and ventricular systole occur at the same time
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).
Is systolic pressure where the ventricls are relaxing?
Relaxation = Diastole Contraction of the atria=Atrial systole Contraction of the ventricles = Ventricular systole
What is the atrial systole?
When the smaller, upper atria chambers contract in the first phase of systole, they send blood down to the larger, lower ventricle chambers.
What is the stage of the cardiac cycle which precedes the resting period?
atrial systole <---- might be wrong
During atrial systole 70 percent of ventricular filling occurs?
No. Most (~70%) of ventricular filling occurs passively, without atrial contraction.
Would yo be able to feel a pulse during atrial systole only?
yes because during atria systole, the heart muscle tissue contracts.
