Human Anatomy & Physiology, 8e (Marieb/Hoehn)Chapter 18 The Cardiovascular System: The HeartMatching QuestionsFigure 18.1Using Figure 18.1, match the following:1) Purkinje fibers.Answer: EDiff: 1 Page Ref: 677; Fig. 18.142) SA node.Answer: ADiff: 1 Page Ref: 677; Fig. 18.143) AV bundle.Answer: CDiff: 1 Page Ref: 677; Fig. 18.144) AV node.Answer: BDiff: 1 Page Ref: 677; Fig. 18.145) Bundle branches.Answer: DDiff: 1 Page Ref: 677; Fig. 18.141Copyright © 2010 Pearson Education, Inc.Figure 18.2Using Figure 18.2, match the following:6) Atrial depolarization.Answer: ADiff: 1 Page Ref: 679; Fig. 18.167) Point after which pressure begins to rise in the aorta.Answer: DDiff: 2 Page Ref: 679; Fig. 18.168) Ventricular repolarization.Answer: EDiff: 2 Page Ref: 679; Fig. 18.169) Point that represents the "dup" sound made by the heart.Answer: EDiff: 3 Page Ref: 679; Fig. 18.162Copyright © 2010 Pearson Education, Inc.Figure 18.3Using Figure 18.3, match the following:10) Ventricular fibrillation.Answer: DDiff: 2 Page Ref: 681; Fig. 18.1811) Second-degree heart block.Answer: CDiff: 3 Page Ref: 681; Fig. 18.1812) Junctional rhythm.Answer: BDiff: 3 Page Ref: 681; Fig. 18.1813) Normal sinus rhythm.Answer: ADiff: 3 Page Ref: 681; Fig. 18.183Copyright © 2010 Pearson Education, Inc.Match the following:A) EpicardiumB) Parietal layerC) MyocardiumD) Endocardium14) The inner lining of the heart.Diff: 1 Page Ref: 66415) Heart muscle.Diff: 1 Page Ref: 66316) Serous layer covering the heart muscle.Diff: 1 Page Ref: 66317) The outermost layer of the serous pericardium.Diff: 2 Page Ref: 663Answers: 14) D 15) C 16) A 17) BMatch the following:A) Purkinje fibersB) AV bundleC) SA nodeD) AV node18) The pacemaker of the heart.Diff: 1 Page Ref: 677; Fig. 18.1419) Found in the interventricular septum.Diff: 1 Page Ref: 67720) Network found in the ventricular myocardium.Diff: 2 Page Ref: 67721) The point in the conduction system of the heart where the impulse is temporarily delayed.Diff: 2 Page Ref: 677Answers: 18) C 19) B 20) A 21) D4Copyright © 2010 Pearson Education, Inc.Match the following:A) Pulmonary valvesB) Aortic valveC) Mitral valveD) Tricuspid valve22) Prevents backflow into the left ventricle.Diff: 1 Page Ref: 67023) Prevents backflow into the right atrium.Diff: 1 Page Ref: 67024) Prevents backflow into the left atrium.Diff: 1 Page Ref: 67025) Prevents backflow into the right ventricle.Diff: 1 Page Ref: 67026) AV valve with two flaps.Diff: 1 Page Ref: 67027) AV valve with three flaps.Diff: 1 Page Ref: 670Answers: 22) B 23) D 24) C 25) A 26) C 27) D 5Copyright © 2010 Pearson Education, Inc.Figure 18.4Using Figure 18.4, match the following:28) Tricuspid valve.Answer: BDiff: 1 Page Ref: 667; Fig. 18.4e29) Mitral valve.Answer: DDiff: 1 Page Ref: 667; Fig. 18.4e30) Right atrium.Answer: ADiff: 1 Page Ref: 667; Fig. 18.4e31) Left ventricle.Answer: EDiff: 1 Page Ref: 667; Fig. 18.4e32) Pulmonary veins.Answer: CDiff: 1 Page Ref: 667; Fig. 18.4e6Copyright © 2010 Pearson Education, Inc.Match the following:A) IschemiaB) Ectopic focusC) Quiescent periodD) InfarctionE) Fibrillation33) Heart muscle is deprived of oxygen.Diff: 1 Page Ref: 67534) Death of heart muscle cells.Diff: 1 Page Ref: 67035) A condition of rapid and irregular or out-of-phase contraction of heart muscle cells.Diff: 1 Page Ref: 67836) An abnormal pacemaker.Diff: 1 Page Ref: 67937) Total heart relaxation.Diff: 1 Page Ref: 682Answers: 33) A 34) D 35) E 36) B 37) CTrue/False Questions1) The myocardium receives its blood supply from the coronary arteries.Answer: TRUEDiff: 1 Page Ref: 6702) Cardiac muscle has more mitochondria and depends less on a continual supply of oxygen thandoes skeletal muscle.Answer: FALSEDiff: 1 Page Ref: 6733) Anastomoses among coronary arterial branches provide collateral routes for blood delivery to the heart muscle.Answer: TRUEDiff: 2 Page Ref: 6694) Congestive heart failure means that the pumping efficiency of the heart is depressed so that there is inadequate delivery of blood to body tissues.Answer: TRUEDiff: 1 Page Ref: 6877Copyright © 2010 Pearson Education, Inc.5) Tissues damaged by myocardial infarction are replaced by connective tissue.Answer: TRUEDiff: 1 Page Ref: 670, 6876) The left side of the heart pumps the same volume of blood as the right.Answer: TRUEDiff: 1 Page Ref: 6687) Chronic release of excess thyroxine can cause a sustained increase in heart rate and a weakened heart.Answer: TRUEDiff: 1 Page Ref: 6868) Arterial blood supply to heart muscle is continuous whether the heart is in systole or diastole.Answer: FALSEDiff: 2 Page Ref: 669-6709) Trabeculae carneae are found in the ventricles and never the atria.Answer: TRUEDiff: 1 Page Ref: 66810) The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart's pulmonary and aortic valves.Answer: FALSEDiff: 2 Page Ref: 68111) Autonomic regulation of heart rate is via two reflex centers found in the pons.Answer: FALSEDiff: 2 Page Ref: 68512) The papillary muscles contract after the other ventricular muscles so that they can take up theslack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.Answer: FALSEDiff: 2 Page Ref: 67013) An ECG provides direct information about valve function.Answer: FALSEDiff: 3 Page Ref: 67914) As pressure in the aorta rises due to atherosclerosis, more ventricular pressure is required to open the aortic valve.Answer: TRUEDiff: 3 Page Ref: 6878Copyright © 2010 Pearson Education, Inc.15) Proxysmal atrial tachycardia is characterized by bursts of atrial contractions with little pause between them.Answer: TRUEDiff: 2 Page Ref: 690Multiple-Choice Questions1) Normal heart sounds are caused by which of the following events?A) excitation of the SA nodeB) closure of the heart valvesC) friction of blood against the chamber wallsD) opening and closing of the heart valvesAnswer: BDiff: 1 Page Ref: 6812) Which of the events below does not occur when the semilunar valves are open?A) Ventricles are in diastole.B) Blood enters pulmonary arteries and the aorta.C) AV valves are closed.D) Ventricles are in systole.Answer: ADiff: 2 Page Ref: 6703) Hemorrhage with a large loss of blood causes ________.A) a lowering of blood pressure due to change in cardiac outputB) a rise in blood pressure due to change in cardiac outputC) no change in blood pressure but a slower heart rateD) no change in blood