The sinoatrial nodal artery, sinoatrial nodal artery or sinoatrial artery is an artery of the heart which supplies the sinoatrial node, the natural pacemaker center of the heart. It is usually a branch of the right coronary artery. [1] It passes between the right atrium, and the opening of …

Feb 12, 2022 · The sinoatrial (SA) nodal artery is the small artery that supplies the sinoatrial (SA) node of the heart (the pacemaker). Gross anatomy Origin. Right coronary artery in 60% of cases and the left coronary artery in 40% of cases. Course. The artery turns posteriorly below the superior vena caval opening. Variant anatomy

Dec 9, 2023 · The sinoatrial nodal artery is a branch of the main coronary arteries, or its derivatives, which supplies blood to the heart's pacemaker, the sinoatrial node. This artery can also supply blood to the crista terminalis and the free walls of both the left and right atrium.

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 …

Oct 30, 2023 · The sinoatrial node, better known as the sinuatrial or SA node is the key structure responsible for the generation of a regular heartbeat and is therefore often referred to as the pacemaker of the heart.

The sinoatrial node (also known as the sinuatrial node, SA node, sinus node or Keith–Flack node) is an oval shaped region of special cardiac muscle in the upper back wall of the right atrium made up of cells known as pacemaker cells.

The sinoatrial nodal artery (SANa) is a highly variable vessel which supplies blood to the sinoatrial node (SAN). Due to its variability and susceptibility to iatrogenic injury, our study aimed to assess the anatomy of the SANa and determine the prevalence of its anatomical variations.

Apr 24, 2023 · The sinoatrial (SA) node is 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 generate electrical impulses.

The sinoatrial (SA) node artery was most frequently a large atrial branch of the right coronary artery (63%), arising at a mean distance of 1.2 cm (range 0.2 - 2.2 cm) from its beginning, with a mean external diameter of 1.7 mm (range 1 - 3 mm).

In general, the sinus nodal artery (SNA) and the atrioventricular nodal artery (AVNA) have been described as major atrial coronary branches.