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Questions and Answers
What is the primary trigger for the rapid opening of voltage-gated sodium channels?
What is the primary trigger for the rapid opening of voltage-gated sodium channels?
- Threshold potential (correct)
- Inactivation of potassium channels
- Conformational changes of voltage-gated potassium channels
- Changes in membrane permeability to ions
What is the net result of the opening of voltage-gated sodium and potassium channels?
What is the net result of the opening of voltage-gated sodium and potassium channels?
- Generation of an action potential (correct)
- Conformational changes of voltage-gated channels
- Inhibition of an action potential
- Changes in membrane permeability to ions
What is the function of the inactivation gate of voltage-gated sodium channels?
What is the function of the inactivation gate of voltage-gated sodium channels?
- Maintaining the channel in an open state
- Closing of the channel (correct)
- Rapid opening of the channel
- Delayed opening of the channel
What is the primary difference between voltage-gated sodium and potassium channels?
What is the primary difference between voltage-gated sodium and potassium channels?
What is the effect of the activation gate of voltage-gated sodium channels?
What is the effect of the activation gate of voltage-gated sodium channels?
What is the direction of the movement of Na+ ions during an action potential?
What is the direction of the movement of Na+ ions during an action potential?
What is the function of voltage-gated potassium channels during an action potential?
What is the function of voltage-gated potassium channels during an action potential?
What is the threshold potential?
What is the threshold potential?
What is the duration of an action potential?
What is the duration of an action potential?
What happens to the membrane potential during depolarization?
What happens to the membrane potential during depolarization?
What is the role of inactivation gates in voltage-gated sodium channels?
What is the role of inactivation gates in voltage-gated sodium channels?
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