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Questions and Answers
What type of channels are always open, allowing a small amount of ions to pass through the cell membrane?
What type of channels are always open, allowing a small amount of ions to pass through the cell membrane?
What is responsible for the reversal of the normal resting polarized state of the membrane during the depolarization stage?
What is responsible for the reversal of the normal resting polarized state of the membrane during the depolarization stage?
What is the term for the electrical changes that accompany nerve excitation?
What is the term for the electrical changes that accompany nerve excitation?
What is the term for the electrical changes transmitted along a nerve as self-propagated disturbances?
What is the term for the electrical changes transmitted along a nerve as self-propagated disturbances?
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What is the term for the loss of the normal resting polarized state of the membrane during the depolarization stage?
What is the term for the loss of the normal resting polarized state of the membrane during the depolarization stage?
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Action potential is an electrical change that occurs during nerve excitation
Action potential is an electrical change that occurs during nerve excitation
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During rest, the nerve membrane potential is higher than -70mV
During rest, the nerve membrane potential is higher than -70mV
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Depolarization is the reversal of the normal resting polarized state of the membrane
Depolarization is the reversal of the normal resting polarized state of the membrane
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Voltage-gated Na+ channels are responsible for the depolarization stage of the action potential
Voltage-gated Na+ channels are responsible for the depolarization stage of the action potential
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Leak channels are responsible for the rapid changes in membrane potential during the action potential
Leak channels are responsible for the rapid changes in membrane potential during the action potential
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Study Notes
Ion Channels and Membrane Potential
- Leak channels are always open, allowing a small amount of ions to pass through the cell membrane.
Action Potential and Depolarization
- Action potential is an electrical change that occurs during nerve excitation.
- Depolarization is the reversal of the normal resting polarized state of the membrane.
Ion Channels and Depolarization
- Voltage-gated Na+ channels are responsible for the depolarization stage of the action potential.
- Leak channels are not responsible for the rapid changes in membrane potential during the action potential.
Resting Membrane Potential
- During rest, the nerve membrane potential is typically lower than -70mV.
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Description
Test your knowledge of the electrical activity in nerves with this quiz on action potential and ion channels. Explore concepts such as resting membrane potential, voltage-gated channels, and the roles of sodium and potassium in nerve cell function.
