Refractory period brief time-out of the heart's electrical impulse that allows for sufficient time for ventricular filling between beats.
At what time is the volume of blood in the ventricle at a maximum?
End-diastolic pressure is at its resting level (end-diastolic pressure) and ventricular volumes are at their maximum value when the heart muscle is relaxed (end-diastolic volume).
What is the state of the heart during systole?
- Describe what occurs during systole in the heart.
- Describe where the blood is sent from each ventricle.
- Right ventricle transfers blood into the pulmonary artery during ventricular contraction and pumps it to the heart.
What are the 4 phases of cardiac cycle?
- There are four main stages of activity in the cardiac cycle: Isovolumic contraction, inflow, ejection, and relaxation are the order of events.
- (See Wiggers graphic, which labels the stages in the following order: 3, 4, 1, and 2, from left to right.)
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