The Coronary Veins

• • The heart is drained by the coronary sinus and the anterior cardiac vein. The coronary sinus and the anterior cardiac veins empty into the right atrium.
• The great cardiac vein and middle cardiac vein collected blood from smaller veins draining the myocardial capillaries
• Blood is delivered to the coronary sinus, a large thin walled vein lying in the posterior portion of the coronary sulcus
• Cardiac veins empty into great cardiac vein or coronary sinus include

  • posterior vein of the left ventricle, draining the area served by circumflex branch of the left coronary artery
  • middle cardiac vein, draining area supplied by posterior interventricular branch of left coronary artery
  • small cardiac vein which receives blood from the posterior surfaces of the right atrium and ventricle
• The anterior cardiac veins drain the anterior surface of the right ventricle