Action Potentials

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6 Terms

1

TERM

Resting Membrane Potential

DEFINITION

the electrical charge of a neuron when it is not active; usually around -70mv

<p>DEFINITION</p><p>the electrical charge of a neuron when it is not active; usually around -70mv</p>
2

TERM

Threshold

DEFINITION

the level of stimulation required to trigger a neural impulse

<p>DEFINITION</p><p>the level of stimulation required to trigger a neural impulse</p>
3

TERM

Depolarization

DEFINITION

The process during the action potential when sodium rushes into the cell causing the interior to become more positive.

<p>DEFINITION</p><p>The process during the action potential when sodium rushes into the cell causing the interior to become more positive.</p>
4

TERM

Action Potential

DEFINITION

nerve impulse

<p>DEFINITION</p><p>nerve impulse</p>
5

TERM

Repolarization

DEFINITION

Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell.

<p>DEFINITION</p><p>Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell.</p>
6

TERM

Hyperpolarization

DEFINITION

The movement of the membrane potential of a cell away from rest potential in a more negative direction because potassium channels remain open while sodium channels reset

<p>DEFINITION</p><p>The movement of the membrane potential of a cell away from rest potential in a more negative direction because potassium channels remain open while sodium channels reset</p>