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Questions and Answers
Which phase of the cardiac action potential is characterized by the influx of sodium ions?
Which phase of the cardiac action potential is characterized by the influx of sodium ions?
- Phase 3
- Phase 2
- Phase 1
- Phase 0 (correct)
Who contributed to the development of the Vaughan Williams classification system?
Who contributed to the development of the Vaughan Williams classification system?
- Miles Vaughan Williams
- Hertford College, Oxford
- Bramah N. Singh (correct)
- The cardiac myocyte
What is the main purpose of antiarrhythmic agents?
What is the main purpose of antiarrhythmic agents?
- To increase sodium-channel inactivation
- To suppress abnormally fast rhythms (correct)
- To prolong the plateau phase of action potential
- To enhance the influx of sodium ions
What makes the classification of antiarrhythmic agents imprecise?
What makes the classification of antiarrhythmic agents imprecise?
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What characterizes phase 2 of the cardiac action potential?
What characterizes phase 2 of the cardiac action potential?
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