What event causes the pulmonic valve to open
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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
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

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What are the ventricles doing during atrial contraction
What are the ventricles “doing” during atrial contraction?

  • Pumping blood into the great vessels

  • Closing their AV valves

  • relaxing

  • Opening their semilunar valves

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Systole and diastole describe the function of the
Systole and diastole describe the function of the contraction?

Pericardium

SA node

Myocardium

mediastinum

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During atrial systole the
During atrial systole, the contraction?

  • AV valves are closed

  • Ventricles are relaxed

  • Ventricles are in systole

  • Semilunar valves open

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What happens during ventricular diastole
What happens during ventricular diastole? contraction?

  • 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

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With which of the following is lubb dupp associated with
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

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Which of the following supplies oxygenated blood to the heart muscle
Which of the following supplies oxygenated blood to the heart muscle?

  • Coronary arteries

  • Pulmonary arteries

  • Pulmonary veins

  • Cardiac veins

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Where does the cardiac action potential cardiac impulse originate
Where does the cardiac action potential ( cardiac impulse) originate?

  • AV node

  • Purkinje fibers

  • Ectopic focus

  • SA node

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What are the conducting fibers that rapidly spread the electrical signal throughout the ventricle
What are the conducting fibers that rapidly spread the electrical signal throughout the ventricle?

  • Bundle of His

  • Purkinje fibers

  • SA node

  • AV node

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Which of the following must precede ventricular contraction
Which of the following must precede ventricular contraction? electrical signal throughout the ventricle?

  • Ventricular relaxation

  • “Lubb-dupp”

  • Ventricular depolarization

  • Closing of the AV valves

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During ventricular contraction the
During ventricular contraction, the electrical signal throughout the ventricle?

  • 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

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