Veins return take away move( return, take away, move ) deoxygenated blood to the heart and arteries take oxygenated deoxygenated( oxygenated, deoxygenated ) blood away towards( away, towards ) from the heart, with the exception of the pulmonary aortic carotid femoral( pulmonary, aortic, carotid, femoral ) artery which takes deoxygenated blood to the lungs.

Valves help with the unidirectional monodirectional( unidirectional, monodirectional ) flow of blood

Systemic circulation is when oxygenated blood from the L. ventricle deoxygenated blood from the R. ventricle( oxygenated blood from the L. ventricle, deoxygenated blood from the R. ventricle ) is transported to the whole of the body's tissues lungs( whole of the body's tissues, lungs ) by a network of arteries and arterioles via the pulmonary artery( by a network of arteries and arterioles, via the pulmonary artery ).