Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 42, Problem 9TYK
Blood flows more slowly in arterioles than in arteries because arterioles
- a. have thoroughfare channels to venules that are often closed off.
- b. collectively have a larger cross-sectional area than do arteries.
- c. must provide opportunity for exchange with the interstitial fluid.
- d. are narrower than arteries.
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Contraction of the smooth muscle layers of the arterioles
a. increases the frictional resistance to blood flow.
b. may be a way of increasing heat exchange through the skin.
c. can increase blood flow to an organ.
d. All of the choices are correct.
Which of the following is True?a. Arteriole diameter is controlled by nerves, hormones,and chemicals from nearby tissues.b. The sympathetic nervous systems causes constriction ofarterioles in hot conditions.c. Precapillary sphincters are controlled by the nervoussystem.d. In response to major blood loss, the veins and arteriesincrease in diameter.
Mark the following statements as true or false. If a statement is false, correct it to make a true statement a. Arteries are the exchange vessels of the cardiovascular system. b. The tunica intima is composed of a sheet of endothelium, connective tissue, and the internal elastic lamina. c. The tunica media consists of smooth muscle cells innervated by vasomotor nerves. d. Muscular arteries control blood flow at the tissue level. e. Veins have smaller lumens, more elastic fibers, and more smooth muscle than arteries.
Chapter 42 Solutions
Study Guide for Campbell Biology
Ch. 42 - Prob. 1IQCh. 42 - Prob. 2IQCh. 42 - In the following diagram of a mammalian...Ch. 42 - a. Name the valve between an atrium and ventricle....Ch. 42 - Prob. 5IQCh. 42 - Prob. 6IQCh. 42 - Prob. 7IQCh. 42 - What lifestyle choices have been correlated with...Ch. 42 - Prob. 9IQCh. 42 - Prob. 10IQ
Ch. 42 - Prob. 11IQCh. 42 - Identify the labeled structures in the following...Ch. 42 - Prob. 2SYKCh. 42 - Prob. 1TYKCh. 42 - Prob. 2TYKCh. 42 - Prob. 3TYKCh. 42 - Prob. 4TYKCh. 42 - During diastole, a. blood fills the atria and...Ch. 42 - Prob. 6TYKCh. 42 - As a general rule, blood leaving the right...Ch. 42 - The nurse tells you that your blood pressure is...Ch. 42 - Blood flows more slowly in arterioles than in...Ch. 42 - Prob. 10TYKCh. 42 - Prob. 11TYKCh. 42 - Prob. 12TYKCh. 42 - Prob. 13TYKCh. 42 - Exchange between the blood and the tissues of the...Ch. 42 - Which of the following processes would tend to...Ch. 42 - Prob. 16TYKCh. 42 - Prob. 17TYKCh. 42 - Prob. 18TYKCh. 42 - Prob. 19TYKCh. 42 - Prob. 20TYKCh. 42 - What do the alveoli of mammalian lungs, the gill...Ch. 42 - Prob. 22TYKCh. 42 - Prob. 23TYKCh. 42 - Prob. 24TYKCh. 42 - Prob. 25TYKCh. 42 - Prob. 26TYK
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- Contraction of _______ drives the flow of blood through the aorta and pulmonary arteries. a. atria b. veins c. arterioles d. Ventriclesarrow_forwardWhich of the following is not a characteristic of a capillary? a. Fenestrated capillaries allow for larger amounts of materials to be exchanged. b. Sinusoid capillaries are the main type of capillary around the brain. c. Capillaries often are arranged in a capillary bed that is supplied by an arteriole. d. The capillary wall consists of an endothelium and a basement membrane only—there is no subendothelial layer.arrow_forwardMatch the following types of arteries to their descriptions ? provides the greatest resistance to blood flow ? "has more smooth muscle, but less elastin, and delivers blood to specific organs" ? includes the aorta and brachiocephalic arteries A. Muscular Arteries B. Arterioles C. Elastic Arteriesarrow_forward
- A healthy elastic artery a. is compliant b. reduces blood flow c. is a resistance artery d. has a thin wall and irregular lumenarrow_forwardVelocity of blood flow is the slowest in a. muscular arteries. b. capillaries. c. veins. d. elastic arteries.arrow_forwardThe delivery of blood by the left ventricle into the sorta is intermittent, whereas blood flow in the peripheral circulation is usually continuous. Which of the following best explains this difference? A. Arteries contain more elastic tissue than veins . B Capillary walls contain little elastic or muscular tissue . C. Continuous flow is needed to meet metabolic requirements. D. Passive recoil of the arteries delivers blood to the periphery during diastole E . Rhythmic contractions of arterial smooth muscie increase the diastolic pressure to above zeroarrow_forward
- For vessels with identical length which has the least resistance to blood flow: OA. An artery with an 8 mm diameter. B. Four arteries in parallel with 2 mm diameters. C. 16 arteries in parallel with 1 mm diameters D. B and Chave the lowest resistance and are the same. E. There is not sufficient information to answer this question.arrow_forwardWhich type of vessel has a large number of smooth muscle celllayers in its tunica media as well as elastic tissue confined to aninternal elastic lamina and external elastic lamina?a. elastic arteryb. muscular arteryc. arterioled. venulearrow_forwardWhich combination of vessels has the most resistance to blood flow: O A. A single 2 Cm long artery with a 3 mm diameter. B. Two 1 Cm long arteries in series with 2 mm diameters. O C. Four 1 Cm long arteries in parallel with 1 mm diameters OD.B and C are the lowest resistance and are the same. OE. There is not sufficient information to answer this question.arrow_forward
- The vasa vasorum Select one: a. are special capillaries that supply nutrients to the walls of arteries and veins. b. are incompetent valves in the large veins. c. supply blood to skeletal muscle. d. are the blood vessels that supply blood to the vas deferens. e. are blood vessels that directly connect arteries to veins.arrow_forwardWhich of the following characteristics is unique to capillaries and not to other blood vessels? A. have low blood pressure B. have high blood pressure C. exchange substances (ions, small molecules and water) between blood and tissues D. carry oxygen and carbon dioxide E. connect to the heart and lungsarrow_forwardAs we know that capillaries are single celled layers. Which blood vessel layer is present in capillaries? a. Tunica Media b. Tunica Intima c. Tunica Adventitia d. None of the abovearrow_forward
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