Which part of the heart is referred to as the left atrioventricular groove?

The left atrioventricular groove is better known as the coronary sulcus, which is the anatomical separation between the atria and the ventricles. This groove encircles the atria and ventricles and serves as a pathway for coronary vessels. It is specifically important because it contains the circumflex artery, which supplies blood to the heart muscle, particularly the left atrium and the lateral wall of the left ventricle.

Understanding the coronary sulcus helps in visualizing cardiac anatomy during echocardiographic assessments. The proper identification of this groove is crucial when evaluating conditions like coronary artery disease or assessing the anatomy during surgical procedures. This structural landmark assists in guiding ultrasound imagery, especially in the left side of the heart where the mitral valve and left atrium reside.