### Answer
The phases of the action potential include the following:

1. **Threshold** - This is the level of membrane potential that must be reached for an action potential to occur. Once the threshold is reached, voltage-gated sodium channels open.

2. **Depolarization** - This phase occurs when sodium ions flow into the neuron, causing the membrane potential to become more positive.

3. **Repolarization** - Following depolarization, the membrane potential returns to a more negative value. This occurs as potassium channels open, allowing potassium ions to exit the cell.

### Not Included
- **Resting phase** is not a phase of action potential; rather, it refers to the state of the neuron when it is not actively firing an action potential.

### Final Selections
The correct phases of the action potential are:
- Threshold
- Depolarization
- Repolarization

Question

### Answer
The phases of the action potential include the following:

1. **Threshold** - This is the level of membrane potential that must be reached for an action potential to occur. Once the threshold is reached, voltage-gated sodium channels open.

2. **Depolarization** - This phase occurs when sodium ions flow into the neuron, causing the membrane potential to become more positive.

3. **Repolarization** - Following depolarization, the membrane potential returns to a more negative value. This occurs as potassium channels open, allowing potassium ions to exit the cell.

### Not Included
- **Resting phase** is not a phase of action potential; rather, it refers to the state of the neuron when it is not actively firing an action potential.

### Final Selections
The correct phases of the action potential are:
- Threshold
- Depolarization
- Repolarization

Knowee AI · Accepted Answer

### Answer
The phases of the action potential include the following:

1. **Threshold** - This is the level of membrane potential that must be reached for an action potential to occur. Once the threshold is reached, voltage-gated sodium channels open.

2. **Depolarization** - This phase occurs when sodium ions flow into the neuron, causing the membrane potential to become more positive.

3. **Repolarization** - Following depolarization, the membrane potential returns to a more negative value. This occurs as potassium channels open, allowing potassium ions to exit the cell.

### Not Included
- **Resting phase** is not a phase of action potential; rather, it refers to the state of the neuron when it is not actively firing an action potential.

### Final Selections
The correct phases of the action potential are:
- Threshold
- Depolarization
- Repolarization

Select all that applyThe phases of the action potential include Blank______.Multiple select question.thresholddepolarizationresting phaserepolarization

Question

Select all that apply

Solution

Answer

Not Included

Final Selections

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