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Right coronary artery
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- Right coronary artery (RCA). The right coronary artery supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm.
www.hopkinsmedicine.org/health/conditions-and-diseases/anatomy-and-function-of-the-coronary-arteries
Jul 13, 2023 · The blood supply to the heart arises from the left and right semilunar cusps of the aortic valve (respectively): The left coronary artery gives rise to the anterior interventricular (left anterior descending) and the left circumflex arteries.
- Disorders of The Coronary Vessels
Unfortunately, the blood vessels that supply the muscles of...
- Layers of The Heart
The myocardium is functionally the main constituent of the...
- Disorders of The Coronary Vessels
The right coronary artery supplies blood to the right ventricle, the right atrium, and the SA (sinoatrial) and AV (atrioventricular) nodes, which regulate the heart rhythm. The right coronary artery divides into smaller branches, including the right posterior descending artery and the acute marginal artery.
Oct 30, 2023 · The left coronary artery (LCA) is one of two coronary vessels (heart vessels) that supply blood to the heart muscle. It arises from the left aortic sinus of the ascending aorta. It lies mainly between the pulmonary trunk and the auricle of the left atrium.
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- Left aortic sinus of the ascending aorta
The heart provides forces to move the blood around the body by the beating Heart. The coronary circulation refers to the vessels that supply and drain the heart. Coronary arteries are named due to the way they encircle the heart, much like a crown.
- Sinoatrial Node
- Atrioventricular Node
- Atrioventricular Bundle
- Purkinje Fibres
The sinoatrial (SA) nodeis a collection of specialised cells (pacemaker cells), and is located in the upper wall of the right atrium, at the junction where the superior vena cava enters. These pacemaker cells can spontaneously generateelectrical impulses. The wave of excitation created by the SA node spreads via gap junctions across both atria, res...
After the electrical impulses spread across the atria, they converge at the atrioventricular node– located within the atrioventricular septum, near the opening of the coronary sinus. The AV node acts to delay the impulses by approximately 120ms, to ensure the atria have enough time to fully eject blood into the ventricles before ventricular systole...
The atrioventricular bundle(bundle of His) is a continuation of the specialised tissue of the AV node, and serves to transmit the electrical impulse from the AV node to the Purkinje fibres of the ventricles. It descends down the membranous part of the interventricular septum, before dividing into two main bundles: 1. Right bundle branch– conducts t...
ThePurkinje fibres(sub-endocardial plexus of conduction cells) are a network of specialised cells. They are abundant with glycogen and have extensive gap junctions. These cells are located in thesubendocardial surfaceof the ventricular walls, and are able to rapidly transmit cardiac action potentials from the atrioventricular bundle to the myocardi...
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Jul 24, 2023 · The circumflex artery is responsible for blood supply to the left atrium and the posterior-lateral aspect of the left ventricle while the LAD supplies blood to the anterior portion of the left ventricle. Other small branches of the coronary arteries are the obtuse marginal artery (OMA), diagonals, and septal perforator (SP). Go to: Embryology.
Jun 11, 2024 · Right coronary artery: This artery supplies blood to the right side of the heart, including the right ventricle, right atrium, and important nodes that control heart rhythm. It branches into smaller arteries like the right posterior descending artery and acute marginal artery.
