QUESTION 9 The semilunar (V-a) valves prevent blood flow from: artery to ventricle O ventricle to atrium O ventricle to artery atrium to ventricle
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- Question 9 Twave represents ventricular repolarization O atrial depolarization O ventricular depolarization O AV nodal delayQUESTION 9 What special structure do cardiac muscles have to distinguish it from the other kinds and types of tissues? striations lacunae intercalated discs goblet cellsQuestion 33 Which pccurs during isovolumetric ventricular contraction? O Rapid filling of the ventricles occurs. O No blood enters or leaves the ventricles. The maximum volume of blood is ejected. Ventricular pressure reaches its maximum value of the cardiac cycle. The pressure in the ventricles decreases while the pressure in the atria increases. MacBook Pro O
- QUESTION 10 Which types of muscle can be inhibited? only smooth muscle O smooth and cardiac only skeletal muscle smooth, cardiac, and skeletal none of them only cardiac muscleQUESTION 2 During ventricular systole, The AV valves are open and the semilunar valves are closed while the ventricle contracts O The AV valves are closed and the semilunar valves are open until sufficient pressure is generated in the ventricle to force the AV valves to close Blood flows passively from the atria and the ventricle fills with no change in ventricular volume O O The aorta and pulmonary arteries are at the mean arterial pressure The AV valves are closed and the semilunar valves are closed until sufficient pressure is generated in the ventricle to force the semilunar valves openQuestion 1 Which ECG component represents peak systole? O ST segment O P-R interval O P-R segment O TP segment
- Question 72 The left atrioventricular, or mitral valve, normally has cusps. two O three O no four Lecture S...pdfQUESTION 1 The main pacemaker area of the heart is the: Bundle branches AV node SA node O Purkinje fibersQuestion 12 2 Stimulation of the Vagus nerve will: O A. Slow AV conduction velocity. OB. Slow heart rate. O C. Increase the delay between atrial and ventricular excitation. OD. All of the above. O E. None of the above.
- Question 10 The closing of AV valves cause the O the first sound. the second sound.Question 22 Listen Which of the following statements are true with respect to cardiac muscle? Select all that apply A Cardiac muscle is under voluntary control D Cardiac muscle contains intercalaned discs. Cardiac muscle is located in the heart Cardiac muscle lacks striations. 00000QUESTION 8 Which sequence is correct regarding the direction of blood filow through the cardiovascular system: O Aorta, pulmonary artery, vena cava, pulmonary vein O Aorta, carotid artery, pulmonary vein, pulmonary artery O Pulmonary vein, pulmonary artery, aorta, Vena cava O Aorta, pulmonary vein, tricuspid valve, left ventricle O Aorta, Vena cava, tricuspid valve, right ventricle