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Chapter 19- The Cardiovascular System: Blood VesselFor this assignment, please read the chapter and answer the questions below. Please type your answers in red or blue color. Please note that points may be deducted if answers are not submitted in these colors.Figure 19.17 on page 718 covers bulk flow across capillary walls and Figure 19.18 on page 720 goes over events and signs of hypovolemic shock.Blood vessels are covered starting on page 721 and ends on page 744 with Table 19.13. We will be covering the actual blood vessels and their names and locations in the lab.Blood vessels:The blood vessels (arteries, arterioles, capillaries, venules, and veins) form a closed tube that carries blood away from the heart, to the cells, and back again.Arteries:Arteries are strong, elastic vessels adapted for carrying high-pressure blood.Arteries become smaller as they divide and become ___arterioles__________________.The wall of an artery consists of an inner endothelium layer, tunica ______media______ (smooth muscle), and tunica ________externia__________ (connective tissue).Sympathetic impulses reduce the diameter of the blood vessels causing _________vasoconstriction_________; when these impulses are inhibited, the diameters of the vessels increase or ______vasodialation_____.Arterial disorders:What is atherosclerosis? What is angioplasty? an operation to repair a damaged blood vessel or unblock a coronary artery