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Questions and Answers
Which type of muscle is the cardiac muscle?
Which type of muscle is the cardiac muscle?
- Involuntary (correct)
- Smooth
- Skeletal
- Voluntary
What is the duration of cardiac action potentials?
What is the duration of cardiac action potentials?
- 10 to 50 msec
- 50 to 100 msec
- 5 to 10 msec
- 150 to 300 msec (correct)
What is the role of the L-type calcium channel in cardiac muscle cells?
What is the role of the L-type calcium channel in cardiac muscle cells?
- Triggering the release of Ca2+ from the SR (correct)
- Initiating a contraction
- Propagating depolarization
- Generating action potentials
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