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The valve of the coronary sinus is a thin, semilunar (half-moon-shaped) valve located on the anteroinferior part of the opening into the right atrium. [5] It is formed by a semicircular fold of the lining membrane of the right atrium. It is situated at the base of the inferior vena cava. [citation needed]
The coronary sinus commences at the union of the great cardiac vein, and the oblique vein of the left atrium. [1] [3] [4] The origin of the coronary sinus is marked by the Vieussens valve of the coronary sinus which is situated at the endpoint of the great cardiac vein. [1]
The Vieussens valve of the coronary sinus is a prominent [1] valve at the end of the great cardiac vein, marking the commencement of the coronary sinus. [2] [1] It is often a flimsy valve composed of one to three leaflets. It is present in 80-90% of individuals.
The blood supply of the AV node is from the atrioventricular nodal branch.The origin of this artery is most commonly (80–90% of hearts) a branch of the right coronary artery, with the remainder originating from the left circumflex artery.
A heart valve is a biological one-way valve that allows blood to flow in one direction through the chambers of the heart. A mammalian heart usually has four valves. Together, the valves determine the direction of blood flow through the heart. Heart valves are opened or closed by a difference in blood pressure on each side. [1] [2] [3]
The bundle of His (BH) [1]: 58 or His bundle (HB) [1]: 232 (/ h ɪ s / "hiss" [2]) is a collection of heart muscle cells specialized for electrical conduction.As part of the electrical conduction system of the heart, it transmits the electrical impulses from the atrioventricular node (located between the atria and the ventricles) to the point of the apex of the fascicular branches via the ...
The great cardiac vein (left coronary vein) is a vein of the heart. It begins at the apex of the heart and ascends along the anterior interventricular sulcus [ 1 ] before joining the oblique vein of the left atrium to form the coronary sinus [ 2 ] upon the posterior surface of the heart.
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