with the venous return taken from the pulmonary arteries , oxygenated extracorporeally , and returned to the left atrium , the lungs were removed , leaving the intact working heart ( condition 2 ) , and the lungs were removed and the atria were denervated , leaving the working innervated ventricles ( condition 4 ) .
C0034052
pulmonary arteries
C0024109
lungs