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Nerve Animations

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Nervous System Animations

A&P 1


voltmeter blank Print out several copies of this figure and use it to take notes regarding voltage and membrane potentials.


Sodium-potassium pump

Na-K pump animation

The sodium-potassium pump (Na+-K+ ATPase) helps the cell maintain concentration gradients of both sodium (higher outside the cell) and potassium (higher inside the cell).

From https://bio.winona.edu/berg/Free.htm

Potassium channel

potassium channel image

Gated channels continue to be investigated by researchers.  This image of a gated potassium channel shows four pieces that fit together to barely allow K+ through a narrow channel when the gate is open.

Use this link activity icon to visit an interactive animation to learn the role of voltage gated channels in producing an action potential.

Voltage-gated channel

voltage gated channel animation

This animation shows the general idea of how voltage-gated sodium channels work(the details of the mechanism may not work exactly this way, but the basic concept is the focus here)

From https://bio.winona.edu/berg/Free.htm

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Last updated: October 22, 2019 at 14:25 pm