Podcast
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?
- Leak channels (correct)
- Gated ion channels
- Action potential
- Voltage gated ion channels
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?
- Gated ion channels
- Voltage gated ion channels (correct)
- Leak channels
- Resting membrane potential
What is the term for the electrical changes that accompany nerve excitation?
What is the term for the electrical changes that accompany nerve excitation?
- Leak channels
- Action potential (correct)
- Resting membrane potential
- Gated ion channels
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?
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?
Action potential is an electrical change that occurs during nerve excitation
Action potential is an electrical change that occurs during nerve excitation
During rest, the nerve membrane potential is higher than -70mV
During rest, the nerve membrane potential is higher than -70mV
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
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
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
Flashcards
Leak channels
Leak channels
Channels that are always open and allow a small amount of ions to pass through the cell membrane.
Action potential
Action potential
The electrical changes that occur during nerve excitation.
Depolarization
Depolarization
The rapid reversal of the normal resting polarized state of the membrane during nerve excitation.
Voltage-gated ion channels
Voltage-gated ion channels
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Nerve impulse
Nerve impulse
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Resting membrane potential
Resting membrane potential
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Action potential and nerve excitation
Action potential and nerve excitation
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Resting potential values
Resting potential values
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Depolarization and membrane polarization
Depolarization and membrane polarization
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Voltage-gated channels and depolarization
Voltage-gated channels and depolarization
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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.
