Electrical waves track a systole (a contraction) of the heart. The end-point of the P wave depolarization is the start-point of the atrial stage of systole.

Jan 2, 2025 · The heartbeat is caused by the heart muscles relaxing and contracting. During this cycle, the period of relaxation is called diastole and the period of contraction is called systole.

Jul 29, 2024 · Systole refers to the period when your heart contracts and pushes blood out to the rest of your body. Diastole is when the heart relaxes and refills with blood.

Apr 14, 2025 · When the heart beats, blood pulses through the arteries to travel throughout the body. However, it is not a steady stream like you might see from a garden hose. The pulse of the blood …

Oct 30, 2023 · Both the atria and the ventricles undergo alternating states of systole and diastole. In other words, when the atria are in diastole, the ventricles are in systole and vice versa.

Systole, period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the …

5 days ago · Explore the fundamental processes of systole and diastole, the two critical phases that define the heart's rhythmic action. This article delves into how the heart efficiently pumps blood to the …

During ventricular systole, pressure rises in the ventricles, pumping blood into the pulmonary trunk from the right ventricle and into the aorta from the left ventricle.

May 7, 2022 · When in a contractile state, this is called systole. When in a relaxed state, this is called diastole. The cycle can then be divided into three stages: Atrial systole: contraction of the atria. …

Systole represents the time during which the left and right ventricles contract and eject blood into the aorta and pulmonary artery, respectively. During systole, the aortic and pulmonic valves open to …