Question

Briefly describe the concept of action potential

Answer 1

Action potentials are caused when different ions cross the neuron membrane. A stimulus first causes sodium channels to open. Because there are many more sodium ions on the outside, and the inside of the neuron is negative relative to the outside, sodium ions rush into the neuron.

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Answer 2

The answer is... During the action potential, part of the neural membrane opens to allow positively charged ions inside the cell and negatively charged ions out.