Multiple Choice
What ensures the movement of blood in one direction through the heart?
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18. The Heart
Electrical Conduction System of the Heart
Back18. The Heart
Electrical Conduction System of the Heart
- Multiple ChoiceWhich structure of the cardiac conduction system acts as the pacemaker of the heart?18views
- Multiple ChoiceWhat sequence describes the flow of electrical impulses in the heart?221views
- Multiple ChoiceThe cardiac muscle receives its supply of oxygenated blood by which of the following mechanisms?111views
- Multiple ChoiceWhat causes the semilunar valves to open during the cardiac cycle?123views
- Multiple ChoiceWhat is the formula for calculating heart rate using the QRS complexes on an ECG?217views
- Multiple ChoiceWhat is the correct order of impulse conduction through the conduction system in the heart?17views
- Multiple ChoiceWhich of the following is true about the heart's function in the circulatory system?140views
- Multiple ChoiceIn the electrical conduction system of the heart, which part of the ECG waveform represents ventricular depolarization?124views
- Multiple ChoiceWhich component of the electrical conduction system of the heart is most responsible for the synchronized contraction of cardiac muscle tissue?155views
- Multiple Choice
Which feature of cardiac tissue allows for the rapid spread of action potentials through the heart?
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Which statement best describes intrinsic conduction of the heart?
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The intrinsic conduction system ensures a coordinated and efficient heartbeat. If the sinoatrial (SA) node malfunctions, which part of the heart’s conduction system is most likely to take over as the pacemaker?
1073views22rank - Multiple Choice
Which answer choice below correctly matches the cardiac conduction structure to where it’s found in the heart?
1063views21rank - Multiple Choice
The AV node has fewer gap junctions than the SA node, leading to slower conduction. How does this slower conduction help the heart function?
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