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Right Atrium
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Left Atrium
Foramen Ovale & Valve of Foramen Ovale Left Atrial Appendage Mitral Valve Pulmonary Vein Ostia Pulmonary Vein Distal Pulmonary Branches

Location:
Above left ventricle; blood enters via the pulmonary veins and exits through the mitral valve

Function:
Drains/pumps oxygenated blood from the lungs into the left ventricle

Importance in cardiovascular diseases:
Atrial arrhythmias; dilated in mitral valve disease; site of emboli formation in atrial fibrillation

 

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