Pathway of Blood.
Lungs; pulmonary veins; left atrium; mitral valve; left ventricle; aortic valve; ascending aorta; aortic arch (brachiocephalic trunk, left common carotid artery, left subclavian artery); descending aorta; arteries; atrioles; capillaries; venules; veins; superior and infereior vana cava; right atrium; tricuspid valve; right ventricle; pulmonary valve; pulmonary trunk; pulmonary arteries.