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Vessels of the blood circulatory system. The heart is the principal organ of the blood circulatory system, pumping blood throughout the body and providing
one of the forces by which nutrients leave the capillaries and enter tissues. Large elastic arteries leave the heart and branch to form muscular arteries.
These arteries branch further and enter organs, where they branch further to form arterioles. These arterioles branch into the smallest vessels, the
capillaries, composed by a single cell layer allowing exchange of nutrients and waste products between blood and surrounding tissue. Capillaries then
merge to form venules, which merge further into small- and later medium-sized veins. These veins leave organs and form larger veins that eventually bring
blood back to the heart. From Mescher AL. Junqueira's Basic Histology Text & Atlas. 12th ed. New York, NY: McGraw-Hill Lange; 2010. Figure 11-1, page
Source: The Vascular System, Pathology: A Modern Case Study
186.
Citation: Reisner HM. Pathology: A Modern Case Study; 2015 Available at: http://mhmedical.com/ Accessed: April 10, 2017
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