Action Potential Charges and Ions

at rest, what charge does the inside of the neuron have?

negative

at rest, what charge does the outside of the neuron have?

positive

at rest, what ion is inside the neuron?

potassium

at rest, what ion is outside the neuron?

sodium

what happens when the action potential travels down the axon?

sodium flows into the cell, temporarily making the charge positive (depolarization). potassium flows out of the cell, returning the charge to negative (repolarization)

is this depolarization or repolarization: sodium flows into the cell

depolarization

is this depolarization or repolarization: potassium flows out of the cell

repolarization