1 SEM CARDLESS ACC W/RAVEN TEXT
12th Edition
ISBN: 9781265321062
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 48, Problem 4A
Summary Introduction
Introduction:
An arteriole is a branch from an artery that fuses with the capillaries. Arterioles consist of one or two smooth muscle layers. Arterioles are considered “the primary site of vascular resistance”.
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Chapter 48 Solutions
1 SEM CARDLESS ACC W/RAVEN TEXT
Ch. 48.1 - Prob. 1LOCh. 48.1 - Prob. 2LOCh. 48.2 - Prob. 1LOCh. 48.2 - Prob. 2LOCh. 48.2 - Prob. 3LOCh. 48.3 - Prob. 1LOCh. 48.3 - Prob. 2LOCh. 48.4 - Prob. 1LOCh. 48.4 - Prob. 2LOCh. 48.5 - Prob. 1LO
Ch. 48.5 - Prob. 2LOCh. 48.5 - Prob. 3LOCh. 48.5 - Prob. 4LOCh. 48 - Prob. 1DACh. 48 - Prob. 1IQCh. 48 - Prob. 2IQCh. 48 - An ECG measures a. changes in electrical potential...Ch. 48 - Systole is vitally important to heart function and...Ch. 48 - Which of the following is the correct sequence of...Ch. 48 - Which of the following statements is not true? a....Ch. 48 - Prob. 5UCh. 48 - Prob. 6UCh. 48 - When a sphygmomanometer is used, a. blood pulses...Ch. 48 - Prob. 8UCh. 48 - In vertebrate hearts, atria contract from the top,...Ch. 48 - Prob. 2ACh. 48 - The difference between the amphibian and mammal...Ch. 48 - Prob. 4ACh. 48 - Humans have a number of mechanisms that help to...Ch. 48 - Prob. 2SCh. 48 - Is the evolution of the four-chambered heart...Ch. 48 - Prob. 4S
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- Which of the following statements is false?a. Only arteries carry oxygenated blood.b. Both arteries and veins have a layer of smooth muscle.c. Capillary beds lie between arteries and veins.d. Sphincters regulate the flow of blood through capillaries.arrow_forwarda calcium channel blocker or an antagonist drug will produce a. vasoconstriction b. increase in blood pressure c. increase in total peripheral resistance d. reduction in cardiac muscle contractilityarrow_forwardProlonged pressure on the skin causes reddened areas at the point of contact due to: Select one: a. Tissue damage and inflammation resulting from impaired capillary blood flow b. Occlusion of major arteries causing infarction of the tissue c. Compression of veins resulting in venous engagement d. Arterial vasodilation from smooth muscle relaxationarrow_forward
- Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. Arterioles reflexively dilate when blood pressure increases. b. Increased concentrations of carbon dioxide and hydrogen ions and a decreased concentration of oxygen in the interstitial fluid cause local arteriolar constriction. c. Tissue perfusion to the heart decreases during systole and increases during diastole. d. The increase in tissue perfusion in skeletal muscle that occurs during exercise is known as hyperemia. e. The sympathetic nervous system causes vasodilation in the skin when body temperature decrearrow_forwardThe major baroreceptor(s) used to regulate blood pressure is/are located in… Group of answer choices a. The brachial artery only b. Both the aortic arch and the carotid sinuses c. The medulla oblongata only d. The aortic arch only e. The carotid sinuses onlyarrow_forwardCalcium channel blockers are drugs that are given to cause a. an increase in the volume of blood being pumped. b. the afterload to be increased. c. contractility to decrease. d. preload to decrease.barrow_forward
- Which cell types are associated with spontaneous action potential generation in the absence of an external stimulus from other tissues. A. Sino-Atrial node cells (SA node). B. Atrial cells C. Ventricular cells. D. Endothelial cells. E. A and D.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_forwardA healthy elastic artery a. is compliant b. reduces blood flow c. is a resistance artery d. has a thin wall and irregular lumenarrow_forward
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