- Ventricular pressure reaches its maximum value.
- When ventricular pressure becomes greater than aortic pressure, the aortic valve opens.
- Rapid ejection of blood into the aorta occurs because of the pressure gradient between the ventricle and the aorta.
- Ventricular volume decreases dramatically because most of the stroke volume is ejected during this phase.
- Atrial filling begins.
- The onset of the T wave, which represents repolarization of the ventricles, marks the end of both ventricular contraction and rapid ventricular ejection.
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