Question

question
which sulcus of the heart marks the border between the atria and ventricles?
answer
coronary sulcus
all of the listed responses are correct.
anterior interventricular sulcus
posterior interventricular sulcus
i dont know yet

Explanation:

The coronary sulcus is a groove on the surface of the heart that marks the boundary between the atria and ventricles. The anterior and posterior interventricular sulci mark the boundaries between the left and right ventricles.

Answer:

Coronary sulcus