Chapter 15 quiz
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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bicuspid valve. | Valve between the left atrium and left ventricle
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tricuspid valve. | Valve between the right atrium and right ventricle
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right ventricle. | Chamber that pumps blood to the lungs
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left ventricle. | Chamber that pumps blood into aorta
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left atrium. | Chamber that receives oxygenated blood from lungs
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right atrium. | Chamber that receives deoxygenated blood the body
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aortic valve. | Valve between the left ventricle and aorta
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pulmonary valve. | Valve between right ventricle and pulmonary trunk
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What does pericardium do | Pericardium anchors the heart to the diaphragm.
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superior vena cava | blood vessel which delivers deoxygenated blood from the head and neck to the heart
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An embolus originating in the coronary sinus would first enter the | right atrium
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Function of the chordae tendineae and papillary muscles of the heart | Help prevent the atrioventricular valves from protruding into the atria when the ventricles contract.
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Which chamber of the heart has the thickest layer of myocardium? | left ventricle
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The normal “pacemaker” of the heart is the | sinoatrial
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What is normal heart action? | The two atria contract together, and then the two ventricles contract together.
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Heart sounds are produced by? | closure of the heart valves
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Heart rate and strength of contraction are controlled by the cardiovascular center, which is located in the | medullar
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The portion of the ECG that corresponds to atrial depolarization is the | P wave
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The opening of the semilunar valves is due tot he pressure in the | ventricles
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On the surface of the heart, the boundaries between the atria and ventricles can be distinguished by the | coronary sulcus
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The Frank-Starling law of the heart | Is important in maintaining equal blood output from both ventricles.
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. Which of the following sequences best represents the pathway of an action potential through the heart’s conduction system? | sinoatrial (SA) node, atrioventricular, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
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What is NOT? true concerning the ventricular filing parts of the cardiac cycle? | The semilunar valves are open.
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Cardiac output | equals stroke volume
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Most heart problems are due to | problems in the coronary circulation
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mitral valve | prolapse may cause heart murmur
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cardiac tamponade | heart compression
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pericarditis | inflammation of heart covering
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systole | heart chamber contraction
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angina pectoris | chest pain from ischemia
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myocardial infarction | heart attack
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diastole | heart chamber relaxation
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