57) The cusps (leaflets) of atrioventricular valves attach directly to A) papill

Question

57) The cusps (leaflets) of atrioventricular valves attach directly to A) papillary muscles B) coronary sulci C) chordae tendineae D) interatrial septa E) trabeculae carneae. 58) The following is a list of vessels and structures that are associated with the heart 58 1. right atrium 2. left atrium 3. right ventricle 4. left ventricle 5. venae cavae 6. aorta 7 pulmonary artery 8. pulmonary veins What is the correct order for the flow of blood entering from the systemic circulation? A) 5.3. 1,7,8,4,2,6 B) 5, 1, 3,8,7,2.4.6 c) 1,7,3,8, 2.4,6,5 D) 5.1. 3, 7.8,2,4,6 E) 1, 2,7, 8, 3,4,6,5 59) At a heart rate of 60 beats/minute, a cardiac cycle lasts 59) A) 630 milliseconds B) 1 second C) 60 milliseconds D) 370 milliseconds E) 60 seconds 60) The percent fraction of formed elements relative to whole blood is the 60 A) viscosity B) hematocrit. C) packed volume. D) specific gravity E) differential cell count. 61) The T wave on an ECG tracing represents A) atrial repolarization. B) ventricular contraction C) atrial depolarization. D) ventricular repolarization. E) ventricular depolarization 10

Explanation / Answer

57,) C )Chordae tendinae

58)D)51378246

59)B)1 sec

60)B) Hematocrit

61)D)Ventricular repolarization

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