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Small cardiac vein

Blood vessel

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Through Heart and Blood

Anatomy

Course

The small cardiac vein runs in the coronary sulcus between the right atrium and right ventricle, and opens into the right extremity of the coronary sinus.

Territory

The small cardiac vein receives blood from the posterior portion of the right atrium and ventricle.

Variation

The small cardiac vein may empty into the coronary sinus, right atrium, or middle cardiac vein. It may be absent.

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