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7 maj 2022 · The cardiac cycle can be divided into systolic (contraction) and diastolic (relaxation) phases. The cycle goes in the following order: atrial systole, ventricular systole and diastole. Heart valves open when the pressure of the chamber lying before it is higher than that of the chamber after the valve.
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18 lis 2019 · In chemistry and physics, the triple point is the temperature and pressure at which solid, liquid, and vapor phases of a particular substance coexist in equilibrium. It is a specific case of thermodynamic phase equilibrium.
Diagram - Wiggers diagram. This shows the cardiac cycle, including the various pressures and volumes around the heart, an ECG trace (showing the electrical activity of the heart) and a phonocardiogram (showing the heart sounds - each sound corresponds to a valve shutting).
30 paź 2023 · The cardiac cycle is defined as a sequence of alternating contraction and relaxation of the atria and ventricles in order to pump blood throughout the body. It starts at the beginning of one heartbeat and ends at the beginning of another.
Revision notes on 3.5.4 The Cardiac Cycle for the AQA A Level Biology syllabus, written by the Biology experts at Save My Exams.
The cardiac cycle refers to the series of events that happen in the heart during one heartbeat. The cardiac cycle functions to maintain blood flow through the heart and the body. Each cardiac cycle is initiated by electrical signal that originates in the SA node and travels in a wave of depolarization through the heart.
Triple point. A typical phase diagram. The solid green line applies to most substances; the dashed green line gives the anomalous behavior of water. In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. [1]
