AAA Driver Improvement Practice Exam

The coronary sulcus is a groove on the surface of the heart that marks the boundary between the:

Left and right atria Left and right ventricles Atria and ventricles Epicardium and myocardium

Atria and ventricles

The coronary sulcus (atrioventricular sulcus) encircles the heart and separates the atria from the ventricles structurally.

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