essels in upper body Aorta This m KEY PULMONA enated CIRCULATION parts of the body SYSTEMIC CIRCULATION Pulmonary artery Pulmonary veins Oxygenated blood oxygenate blood to the lungs is carried from the lungs back to the heart in these vein Capillary M Vent Network of vessels Network of vessels n right lu g dioxide and absorb portal vein oxygen in the capillaries This vein carries blood rich in nutrients from the Network of vessels in igestive system Inferior vena cav This vein carries blood from the lower body to the heart Superior vena cava This vein carries blood from Network of vessels the upper body to the heart in lower body