Keyword Analysis & Research: action potential define

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What does an action potential refer to as?

The action potential is an explosion of electrical activity that is created by a depolarizing current. This means that some event (a stimulus) causes the resting potential to move toward 0 mV.

How do you explain an action potential?

An action potential is the electrical signal that travels down the neuron cell. The electrical signal is negatively charged, because it is, obviously, electrical. It is drawn along the neuron by a series of positive ions appearing in front of it and pulling it forward.

What causes an action potential?

An action potential is caused by either threshold or suprathreshold stimuli upon a neuron. It consists of four phases: depolarization, overshoot, and repolarization. An action potential propagates along the cell membrane of an axon until it reaches the terminal button.

What are the 4 steps of action potential?

Four Steps of Action Potential. By: Rose Eppolito & Taylor Darwin. Step One. -Special channels called stimulus gated channels in the dendrite open when certain chemicals like neurotransmitters bind to them. Step Two: Depolarization. Once the charge reaches -59 mV due to Na+ moving into the neuron, the chanells will open.


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