Victory for the ACT Student Text 15e

L ESSON 1 | D ATA R EPRESENTATION • 297 Based on the information in the diagram, which of the following conclusions is correct? A. As blood vessel distance from the left ventricle increases, relative total surface area decreases. B. As blood vessel distance from the left ventricle increases, pulse pressure increases. C. Blood vessels with the greatest relative total surface area have the highest pulse pressure. D. Blood vessels closest to and farthest from the left ventricle have the smallest relative total surface area. A physician examining a newly discovered –”‹„‡ ‘ˆ ’‡‘’Ž‡ †‡‡’ ‹ –Š‡ ƒœ‘ jungles found that the relative total surface area of their capillaries was greater than that previously reported for any other group of people. If the physician were to predict the average velocity of blood through the capillaries of these people, which of the following values would be most reasonable? F. 2 cm/sec G. 3 cm/sec H. 4 cm/sec J. 5 cm/sec

According to the diagram, pulse pressure can be detected: F. in large arteries only. G. in large arteries as well as in large veins. H. in blood vessels between the aorta and the capillaries. J. primarily in the arterioles, capillaries, and venules. Based on the information in the diagram, average blood pressure: A. decreases with increasing blood vessel distance from the left ventricle. B. remains approximately constant regardless of blood vessel distance from the left ventricle. C. ϐ‹”•– ‹…”‡ƒ•‡•ǡ –Š‡ †‡…”‡ƒ•‡• ™‹–Š increasing blood vessel distance from the left ventricle. D. is highest in blood vessels with the greatest relative total surface area. Which of the following correctly states the relationship between the relative total surface area of blood vessels and the average blood pressure? F. As relative total surface area decreases, average blood pressure increases. G. As relative total surface area decreases, average blood pressure decreases. H. As relative total surface area decreases, average blood pressure may increase or decrease. J. Average blood pressure always changes in the opposite direction as the relative total surface area changes.

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