As far as know they are the Coronary Sinus, the Superior Vena Cava and the Inferior Vena Cava.
Superior and inferior Vena Cava
the liver
There are no vessels that drain the right atrium, except, perhaps the coronary veins. The right atrium moves blood through the tricuspid valve into the right ventricle of the heart.
There are two main blood vessels into which all blood returning to the heart drains, the superior and inferior vena cava. The superior vena cava will drain blood from the upper part of the body into the right atrium and the inferior vena cava will drain blood from the lower part of the body into the right atrium.
Superior vena cavaInferior vena cavacoronary sinus
The vessels that carry blood to the heart of the blood vessels called veins. Arteries carry blood from the heart to the various body tissues.
The vessels that carry blood to the heart of the blood vessels called veins. Arteries carry blood from the heart to the various body tissues.
Three vessels drain into the right atrium, the Ascending vena cava, the descending vena cava and the coronary sinus.
Coronary sinus, in turn empties into the right atrium Coronary sinus, in turn empties into the right atrium Coronary sinus, in turn empties into the right atrium Coronary sinus, in turn empties into the right atrium
There are two the superior (from the head) and inferior (from the body) vena cava.
The superior vena cava and inferior vena cava are the two vessels that return oxygen-poor blood to the heart. Both empty into the heart's right atrium.
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