WebApr 8, 2010 · The cardiac cycle is the sequence of events that occurs when the heart beats. As the heart beats, it circulates blood through pulmonary … WebDec 6, 2024 · An electrocardiogram — abbreviated as EKG or ECG — measures the electrical activity of the heartbeat. With each beat, an electrical impulse (or “wave”) travels through the heart. This electrical wave causes the muscle to squeeze and pump blood …
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WebJan 17, 2024 · A typical ECG tracing of the cardiac cycle (heartbeat) consists of a P wave (atrial depolarization ), a QRS complex (ventricular depolarization), and a T wave (ventricular repolarization). An additional wave, the U wave ( Purkinje repolarization), is … WebThe cardiac cycle refers to the pattern of contraction and relaxation of the heart during one complete heartbeat. Contraction of the heart muscle is known as systole and relaxation of the heart... pterygoid insertion
Cardiac Cycle - University of Texas Medical Branch
WebThe cardiac cycle includes two phases: diastole and systole (Fig. 1.4 ). In the diastole phase, blood returns to the heart from the superior and interior vena cava and flows into the right atrium. The pressure in the right atrium increases as blood flows into it. WebThe labels across the top list the different phases during the cycle, the vertical lines showing approximately when these phases begin and end. Notice that this figure represents more than one cycle, reinforcing the idea that these cycles are occurring repetitively with a new cycle beginning as soon as the previous cycle ends. WebOct 8, 2024 · The Cardiac Cycle. Cardiac cycle of the left side of the heart. The electrocardiogram (EKG) below the diagram shows the corresponding waves with each phase of the cardiac cycle. The bottom line represents the first and second heart … hotcopper snc