circulatory system diagram labeled. black and white .

circulatory_system_diagram_2_black circulatory system humans includes two major circulation pathways: systemic pulmonary oxygenated blood pumped heart body's tissues arteries deoxygenated returns veins lungs receive oxygen body diagram labeled black white circulatory system diagram labeled human design black white biology vessel bloodstream vein capillary pulmonary artery cardiovascular blood vascular cardiology circulation aorta organ medical anatomy body medicine heart science anatomical drawing