The atria are separated from the ventricles externally by the
A)anterior interventricular sulcus.
B)posterior interventricular sulcus.
C)sinoventricular sulcus.
D)coronary sulcus.

Question

Quizplus · Accepted Answer

The coronary sulcus (also known as the atrioventricular groove) is a groove on the exterior surface of the heart that separates the atria from the ventricles. The anterior and posterior interventricular sulci are located on the inferior surface of the heart and separate the right and left ventricles, respectively. The sinoventricular sulcus is not a recognized anatomical term.

The Atria Are Separated from the Ventricles Externally by the