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Questions and Answers
What is the resting membrane potential in myocardial working cells?
What is the resting membrane potential in myocardial working cells?
- -60 mV to -65 mV
- -70 mV to -75 mV
- -95 mV to -100 mV
- -85 mV to -90 mV (correct)
During isovolumetric relaxation, what is the state of the cardiac valves?
During isovolumetric relaxation, what is the state of the cardiac valves?
- All valves are open
- Atrioventricular valves are open, semilunar valves are closed
- All valves are closed (correct)
- Atrioventricular valves are closed, semilunar valves are open
Which nerve mediates the oculo-cardic reflex?
Which nerve mediates the oculo-cardic reflex?
- Trigeminal nerve (correct)
- Vagus nerve
- Glossopharyngeal nerve
- Facial nerve
What causes calcium influx from extracellular fluid to sarcomeres during myocardial contraction?
What causes calcium influx from extracellular fluid to sarcomeres during myocardial contraction?
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Which phase of the action potential of the myocardial cells is important for impulse formation?
Which phase of the action potential of the myocardial cells is important for impulse formation?
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