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BLOOD VESSELS Functions Arteries—distribution of nutrients, gases, etc., with movement of blood under high pressure; assist in maintaining the arterial blood pressure Capillaries—serve as exchange vessels for nutrients, wastes, and fluids Veins—collect blood for return to the heart; low pressure vessels Names of main arteries—see Figure 12-10 and Table 12-1 Names of main veins—see Figures 12-11 and 12-12 and Table 12-2

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CIRCULATION Systemic and pulmonary circulation—refers to the blood flow through the vessels arranged to form a circuit or circular pattern (Figure 12-13) Systemic circulation Carries blood throughout the body Path goes from left ventricle through aorta, smaller arteries, arterioles, capillaries, venules, venae cavae, to right atrium Pulmonary circulation Carries blood to and from the lungs; arteries deliver deoxygenated blood to the lungs for gas exchange Path goes from right ventricle through pulmonary arteries, lungs, pulmonary veins, to left atrium

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CIRCULATION Hepatic relating to supplying or draining the liver Portal door or entrance Circulation orderly movement through a pathway (Figure 12-14) Unique blood route through the liver Vein (hepatic portal vein) exists between two capillary beds Assists with homeostasis of blood glucose levels

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