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The aortic valve normally has three cusps or leaflets, although in 1–2% of the population it is found to congenitally have two leaflets. [1] The aortic valve is the last structure in the heart the blood travels through before stopping the flow through the systemic circulation. [1]
English: Diagram of the human heart. 1. Superior vena cava 2. 4. Mitral valve 5. Aortic valve 6. Left ventricle 7. Right ventricle 8. Left atrium 9. Right atrium 10. Aorta 11. Pulmonary valve 12. Tricuspid valve. 13. Inferior vena cava
Wiggers diagram, showing various events during a cardiac cycle, with closures and openings of the aortic and mitral marked in the pressure curves. This is further explanation of the echocardiogram above. MV: Mitral valve, TV: Tricuspid valve, AV: Aortic valve, Septum: Interventricular septum.
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A bicuspid aortic valve may cause the heart's aortic valve to narrow (aortic stenosis). [6] This narrowing prevents the valve from opening fully, which reduces or blocks blood flow from the heart to the body. In some cases, the aortic valve does not close tightly, causing blood to leak backward into the left ventricle. [10]
On the left are two, two-dimensional views showing tricuspid and mitral valves (above) and aortic valve (below). Blood flow diagram of the human heart. Blue components indicate de-oxygenated blood pathways and red components indicate oxygenated pathways.
The section shows: 1) the opened ventricles contracting once per heartbeat—that is, once per each cardiac cycle; 2) the (partly obscured) mitral valve of the left heart; 3) the tricuspid and pulmonary valves of the right heart—note these paired valves open and close oppositely. + (The aortic valve of the left heart is located below the ...
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: Blood pressure. Aortic ...