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The following 60 pages use this file: Aortic valve; Aortic valve replacement; Athletic heart syndrome; Atrium (heart) Blood; Cavoatrial junction; Fourth heart sound; Heart; Human body; Inferior vena cava; Lutembacher's syndrome; Mitral valve; Mitral valve repair; Pressure–volume diagram; Pulmonary artery; Pulmonary regurgitation; Pulmonary ...
Video clip from the aortic valve in a living, beating pig heart. When the left ventricle contracts , pressure rises in the left ventricle. When the pressure in the left ventricle rises above the pressure in the aorta, the aortic valve opens, allowing blood to exit the left ventricle into the aorta. When ventricular systole ends, pressure in the ...
File:Diagram of the human heart (valves improved).svg. ... little changes in the form of aortic and pulmonary valves and the position of the pulmonary valves by ...
The closure of the aortic valve contributes the A2 component of the second heart sound. The pulmonary valve (sometimes referred to as the pulmonic valve) lies between the right ventricle and the pulmonary artery, and has three cusps. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ...
English: The aortic valve controls outflow of blood from the left ventricle of the heart through the aorta (valve is indicated within the yellow highlighted box). Normal aortic valve is tricuspid. Five types of bicuspid valve are shown, with Type 1 being most prevalent.
Heart bicuspid aortic valve anatomy: Date: 23 December 2006: Source: Patrick J. Lynch, medical illustrator: Author: Patrick J. Lynch, medical illustrator: Permission (Reusing this file) Creative Commons Attribution 2.5 License 2006
As diastole ends, the ventricles begin depolarizing and, while ventricular pressure starts to rise owing to contraction, the atrioventricular valves close in order to prevent backflow to the atria. At this stage, which corresponds to the R peak or the QRS complex seen on an ECG, the semilunar valves (aortic and pulmonary valves) are also closed.
A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century. [ 1 ] [ 2 ] In the Wiggers diagram, the X-axis is used to plot time subdivided into the cardiac phases, while the Y-axis typically contains the following on a single grid:
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