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11 de nov. de 2019 · Updated on November 11, 2019. The cardiac cycle is the sequence of events that occurs when the heart beats. As the heart beats, it circulates blood through pulmonary and systemic circuits of the body. There are two phases of the cardiac cycle: The diastole phase and the systole phase.
- Regina Bailey
The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole , following a period of robust contraction and pumping of blood, called systole . [1]
30 de oct. de 2023 · Cardiac cycle phases. The events of the cardiac cycle, start with a spontaneous action potential in the sinus node as we described previously. This stimulus causes a series of events in the atria and the ventricles. All these events are “organized” in two phases: diastole (when the heart fills with blood) and systole (when the ...
- Content Manager
- 15 min
Alright, so each heartbeat consists of two phases: systole, which is when the heart contracts and pumps blood out of the ventricles; and diastole, which is when the heart relaxes and ventricles fill with blood. Now, the cardiac cycle graph is used to express events during one cardiac cycle.
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The cardiac cycle which begins when both the atria and ventricles are relaxed (diastole) can be broken up into four phases – filling, isovolumic contraction, ejection, and filling. Several variables change during each of these phases.
3 de oct. de 2022 · The cardiac cycle is a series of pressure changes that take place within the heart. These pressure changes result in the movement of blood through different chambers of the heart and the body as a whole.
Summarize and explain the connection between the various events of the cardiac cycle. Compare atrial and ventricular systole and diastole. Relate heart sounds detected by auscultation to action of heart’s valves.
