Cardiovascular part OneOnline version BSC2086 by Dr. David Myers 1 Which layer of the heart allows it to act as a pump? a Epicardium b Myocardium c Pericardium d Endocardium 2 Which slinglike structure supports the heart? a Pericardium b Chordae tendineae c Myocardium d Endocardium 3 What is the hardest working cardiac chamber and therefore has the thickest myocardium? a Right atrium b Right ventricle c Left atrium d Left ventricle 4 The right ventricle pumps blood to the a right atrium. b pulmonary veins c pulmonary artery d aorta. 5 vessel(s) that carry(ies) blood from the pulmonary capillaries to the left atrium is (are) the a aorta. b pulmonary artery c pulmonary veins. d vena cava. 6 The aorta receives blood from the a right ventricle. b pulmonary veins. c pulmonary artery. d left ventricle. 7 Blood flows from the right atrium through which atrioventricular valve to the right ventricle? a Bicuspid b Mitral c Pulmonic d Tricuspid 8 Which of the following structures receives unoxygenated blood? a Aorta b Left ventricle c Pulmonary artery d Pulmonary veins 9 Which of the following receives oxygenated blood? a Venae cavae b Pulmonary veins c Right atrium d Pulmonic valve 10 Chordae tendineae are not associated with this valve. a Aortic b Mitral c Tricuspid d Bicuspid 11 With which of the following is “lubb-dupp” associated? a Myocardial contraction b Ventricular depolarization c Closing of heart valves d Diffusion of O2 from the lungs 12 Which of the following supplies oxygenated blood to the heart muscle? a Coronary arteries b Pulmonary artery c Pulmonary veins d Cardiac veins 13 Which structure connects the cusps of the AV valves to the ventricles? a Purkinje fibers b AV node c Bundle of His d Chordae tendineae 14 Which of the following is least related to the mitral valve? a Left heart b Bicuspid c Semilunar d Chordae tendineae 15 Through which of the following semilunar valves does oxygenated blood pass? a Mitral b Bicuspid c Aortic d Pulmonic 16 The correct sequence is: Blood flows from the right atrium to the right ventricle to the pulmonary artery to the a pulmonary veins. b coronary arteries. c pulmonary capillaries. d vena cava 17 What event causes the pulmonic valve to open? a The P wave b An increase in the pressure within the right ventricle c “Lubb-dupp” d Contraction of the chordae tendineae 18 Which layer of the heart also lines the valves and is continuous with blood vessels? a Myocardium b Endocardium c Epicardium d Pericardium 19 The epicardium is a layer of the a myocardium b diaphragm. c pericardium. d endocardium. 20 The mitral and the bicuspid valves a are semilunar valves. b are both located on the right side of the heart. c “see” only unoxygenated blood d are the same valves. 21 The pulmonic and aortic valves a are atrioventricular valves. b “see” only oxygenated blood. c are attached to the ventricular walls by chordae tendineae d are semilunar valves. 22 The correct sequence is: Blood flows from the pulmonary capillaries to the pulmonary veins to the left atrium to the left ventricle to the a vena cava. b pulmonary artery c aorta d circle of Willis. 23 Which of the following is a result of ventricular contraction? a The AV valves open b The semilunar valves close. c Blood is pumped into the pulmonary artery and the aorta. d Blood flows back into the atria. 24 Under what condition is blood most likely to flow “backward” (e.g., from the left ventricle back into the left atrium)? a Pulmonary artery hypertension b Left ventricular hypertrophy c An insufficient mitral valve d Pulmonary edema 25 What are ventricles “doing” during atrial contraction? a Pumping blood into the great vessels b Closing their AV valves c Relaxing d Opening their semilunar valves 26 Which cavity first receives unoxygenated blood from the vena cava? a Right ventricle b Left atrium c Left ventricle d Right atrium 27 What is the name of the valve that prevents backflow of blood into the right atrium when the right ventricle contracts? a Mitral b Pulmonic c Semilunar d Tricuspid 28 What is the cause of the heart sounds “lubb-dupp”? a Closing of the heart valves b Flow of blood through the coronary arteries c The electrical signal as it moves through the AV node d The firing of the autonomic nerves to the SA node 29 Which of the following is not true of the heart? a The heart is located within the mediastinum. b The apex is located left of the sternal midline at the level of the fifth intercostal space c The base of the heart is located at the level of the second rib. d The pericardium is composed of actin and myosin. 30 Which of the following is least descriptive of the myocardium? a Supplied with blood by the coronary arteries b Thicker in the ventricles than the atria c Thicker in the left ventricle than the right ventricle d Thicker in the left atrium than the right ventricle 31 Which of the following is a function of a valve? a Regulates the direction of blood flow through the heart b Regulates the amount of oxygen bound to hemoglobin c Regulates heart rate d Directs the movement of the cardiac impulse 32 Which of the following is least true of the aortic valve? a It is also called the left semilunar valve. b It “sees” oxygenated blood. c Blood flows from the ventricle through this valve into the pulmonary artery. d An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle. 33 An accumulation of excess fluid in the pericardial space a causes external compression of the heart. b depresses the SA node, thereby eliminating pacemaker activity. c causes valvular stenosis. d causes a left-to-right shunt. 34 Which structure “sees” oxygenated blood? a Tricuspid valve b Pulmonary artery c Pulmonary veins d Right semilunar valve 35 Which group is incorrect? a Semilunar valves: pulmonic, aortic b Atrioventricular valves: tricuspid, bicuspid, mitral c Structures that carry oxygenated blood: pulmonary veins, left ventricle, aorta d Structures that carry unoxygenated blood: right ventricle, venae cavae, pulmonary veins 36 Which group is incorrect? a Semilunar valves: pulmonic, aortic b Structures that carry oxygenated blood: pulmonary veins, left ventricle, aorta c Layers of the heart: epicardium, myocardium, endocardium d Abnormal heart rates: tachycardia, bradycardia, normal sinus rhythm 37 The middle layer of the heart is the: a myocardium b epicardium c endocardium 38 what part of the nervous system increases heart rate? a sympathetic NS b parasympathetic NS 39 Normal heart rate is: a over 110 bpm b 80 -110 bpm c 40 -60 bpm d 60 -100 bpm 40 a heart rate under 60 is called a bradycardia b tachycardia c sinus rhythum 41 a heart rate over 100 is called: a bradycardia b tachycardia c sinus rhythm 42 arteries that supply the heart muscle with oxygen: a cerebral arteries b systemic arteries c pulmonary arteries d coronary arteries 43 the contraction phase of the heartbeat: a diastole b systole 44 the relaxing phase of a heartbeat: a systole b diastole
New game