7.11. Coronary Arteries on the Anterior Aspect of the Heart
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Blood vessels run in grooves
The main 'grooves' of the heart are:
- Anterior interventricular groove
- Posterior interventricular groove
- Coronary sulcus
- Right coronary artery
- Left coronary artery
The Right and Left Coronary Arteries (Anterior Aspect)
On the anterior aspect of the heart, the right coronary artery gives rise to:
- SA nodal artery, which supplies the SA node.
- Conus artery, which supplies the base/infundibulum/conus of the pulmonary trunk.
- Right marginal branch, which supplies the wall of the right ventricle.
- Anterior interventricular branch, which supplies the anterior aspect of both ventricular walls.
- Circumflex branch, which supplies the left atrium and left ventricle. (Remember, the left ventricular wall is thicker than the right because it has to generate more pressure to pump blood around the entire body).