A cardiac atrium that is in the left side of the heart. It receives oxygenated blood from the pulmonary veins, In mammals this is pumped into the left ventricle, via the Mitral valve. [ http://orcid.org/0000-0002-6601-2165 http://en.wikipedia.org/wiki/Left_atrium ]

Synonyms: heart left atrium left atrium of heart left cardiac atrium left atrium cardiac left atrium

This is just here as a test because I lose it