Cardiac veins

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The cardiac veins] return deoxygenated blood from the myocardium to the right atrium and run parallel to coronary arteries.

Anatomy

The components of the cardiac venous system are the following:

Coronary sinus

• It is present in the coronary sulcus.
• It receives most venous return of the heart.
• It empties in the right atrium.

Great cardiac vein

• It runs parallel to the LAD in the anterior interventricular groove.
• It drains in the coronary sinus.

Middle cardiac vein

• It runs parallel to the PDA in the posterior interventricular groove.
• It drains in the coronary sinus.

Small cardiac vein

• It runs parallel to the marginal artery.
• It drains in the coronary sinus.

Anterior Cardiac Veins

• Drains the anterior right ventricle.
• Empties directly in the right atrium an not in the coronary sinus.