CVS Practice Test 2026 - Free CVS Practice Questions and Study Guide

Question: 1 / 400

Where is the coronary sinus located?

In the left atrium

In the right ventricle

At the AV groove

The coronary sinus is located at the atrioventricular (AV) groove, which is the external boundary between the atria and ventricles of the heart. This structure serves as a large vessel that collects deoxygenated blood from the heart muscle itself, primarily draining blood from the myocardium back into the right atrium. The coronary sinus runs along the posterior part of the heart's AV groove, making it an important anatomical feature for understanding the heart's circulatory system.

The other locations mentioned do not accurately describe the position of the coronary sinus; it is specifically associated with the AV groove rather than being found in either the left atrium, right ventricle, or left ventricle.

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In the left ventricle

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