CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 23, Problem 7TYK
Blood flows more slowly in the arterioles than in the artery that supplies them because the arterioles
a. have thoroughfare channels to venules that are often closed off, slowing the flow of blood.
b. have sphincters that restrict flow to capillary beds.
c. are narrower than the artery.
d. collectively have a larger cross-sectional area than does the artery.
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Students have asked these similar questions
Which 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.
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.
Blood flows faster in a venule than in a capillary because venulesa. have one-way valves.b. are more muscular.c. are closer to the heart.d. have higher blood pressures.e. have larger diameters
Chapter 23 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 23 - Connecting the Concepts 1. Use the following...Ch. 23 - Prob. 2TYKCh. 23 - When the doctor listened to Janets heart, he heard...Ch. 23 - Prob. 4TYKCh. 23 - Prob. 5TYKCh. 23 - Prob. 6TYKCh. 23 - Blood flows more slowly in the arterioles than in...Ch. 23 - Which of the following is not a true statement...Ch. 23 - Trace the path of blood starting in a pulmonary...Ch. 23 - Prob. 10TYK
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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_forwardMatch the type of blood vessel with its major function. _____ arteriesa. diffusion _____ arteriolesb. control of blood distribution _____ capillariesc. transport, blood volume reservoirs _____ veinsd. blood transport and pressure regulatorsarrow_forwardContraction 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.arrow_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_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_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_forward
- Which of the following is the best description of what happens in capillaries? A. Capillaries are surrounded by thicker smooth muscle moving blood cells to exchange nutrients and oxygen. B. Capillaries connect minor veins to major veins returning blood to the heart. C. Capillaries are the location where oxygen, carbon dioxide, and nutrients are exchanged with tissues at the cellular level. D. Capillaries are the site where blood mixes with interstitial fluid to allow for gas and nutrient exchange.arrow_forwardIf a patient has cirrhosis of the liver and is unable to produce sufficient albumin and other plasma proteins, then what variable is changed in capillary exchange, and what is the effect? a. There is no change in the capillary exchange process. b. Hydrostatic pressure in the blood decreases, and fluid remains in the blood. c. Colloid osmotic pressure in the capillary increases, and blood volume increases in the blood vessels. d. Colloid osmotic pressure in the capillary decreases, and fluid remains in the interstitial fluid, potentially causing edema.arrow_forwardMark 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.arrow_forward
- Which of the following best describes the primary role of resistance vessels? Group of answer choices a.Providing nutrient supply to the walls of larger vessels b. They regulate arterial blood pressure and blood flow within the organs. c. Ensuring blood storage during periods of low cardiac output d. Directing blood flow to specific organs based on demandarrow_forwardVelocity of blood flow is the slowest in a. muscular arteries. b. capillaries. c. veins. d. elastic arteries.arrow_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
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