Blood is supplied to the myocardium by O contact with blood in the pumping chambers. O the coronary sinus. O arteries that branch off the subclavian arteries. O arteries that branch from the pulmonary...

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Extracted text: Blood is supplied to the myocardium by O contact with blood in the pumping chambers. O the coronary sinus. O arteries that branch off the subclavian arteries. O arteries that branch from the pulmonary arteries. the coronary arteries.