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What event causes the pulmonic valve to open?

What event causes the pulmonic valve to open?. The P wave An increase in the pressure within the right ventricle “Lubb-dupp” Contraction of the chordae tendineae. 0% 0% 0% 0%. What are the ventricles “doing” during atrial contraction?. Pumping blood into the great vessels

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What event causes the pulmonic valve to open?

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  1. What event causes the pulmonic valve to open? • The P wave • An increase in the pressure within the right ventricle • “Lubb-dupp” • Contraction of the chordae tendineae 0% 0% 0% 0%

  2. What are the ventricles “doing” during atrial contraction? • Pumping blood into the great vessels • Closing their AV valves • relaxing • Opening their semilunar valves 0% 0% 0% 0%

  3. Systole and diastole describe the function of the Pericardium SA node Myocardium mediastinum 0% 0% 0% 0%

  4. During atrial systole, the • AV valves are closed • Ventricles are relaxed • Ventricles are in systole • Semilunar valves open 0% 0% 0% 0%

  5. What happens during ventricular diastole? • The ventricles are filling with blood • All semilunar valves are open • Both AV valves are closed • Blood is pumped to the lungs and systemic circulation 0% 0% 0% 0%

  6. With which of the following is “lubb-dupp” associated with? • Myocardial contraction • Ventricular depolarization • Closing of the heart valves • Diffusion of oxygen from lungs to the blood in the pulmonary capillaries 0% 0% 0% 0%

  7. Which of the following supplies oxygenated blood to the heart muscle? • Coronary arteries • Pulmonary arteries • Pulmonary veins • Cardiac veins 0% 0% 0% 0%

  8. Where does the cardiac action potential ( cardiac impulse) originate? • AV node • Purkinje fibers • Ectopic focus • SA node 0% 0% 0% 0%

  9. What are the conducting fibers that rapidly spread the electrical signal throughout the ventricle? • Bundle of His • Purkinje fibers • SA node • AV node 0% 0% 0% 0%

  10. Which of the following must precede ventricular contraction? • Ventricular relaxation • “Lubb-dupp” • Ventricular depolarization • Closing of the AV valves 0% 0% 0% 0%

  11. During ventricular contraction, the • AV valves close in response to intraventricular pressure • ECG is displaying the T wave • Semilunar valves close, causing S1 or “dupp” • ECG is displaying the P-R interval 0% 0% 0% 0%

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