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: The [[heart]] has two '''atria'''. A [[Right Atrium|right '''atrium''']] and a [[Left Atrium|left '''atrium''']]
: The [[Right Atrium|right '''atrium''']] receives [[deoxygentated]] [[blood]] from the body through a [[vein]] called the [[Vena Cava]] and pumps it into the [[Right Ventricle|right ventricle]].
: The [[Left Atrium|left '''atrium''']] receives [[oxygentatedoxygenated]] [[blood]] from the [[lung]]s through a [[vein]] called the [[Pulmonary Vein]] and pumps it into the [[Left Ventricle|left ventricle]].