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coronary venous sinus
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coronary venous sinus

anatomy
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Quick Summary

The coronary sinus is a venous channel that collects most of the blood from the heart's walls and empties it into the right atrium. It is formed by cardiac veins that run alongside the coronary arteries. Unlike veins, venous sinuses, such as those in the brain, lack a muscular coat and are lined with endothelium. The coronary sinus is derived from the sinus venosus and is continuous with the largest of the cardiac veins. This system is crucial for returning deoxygenated blood from the heart muscle itself back to the heart's chambers.12345

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5 Britannica Sources
  1. coronary sinus
  2. human cardiovascular system - Blood supply to the heart
  3. circulatory system - The blood vessels
  4. venous sinus
  5. coronary vein

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