Neuron and Action Potential

Front

What is an electrical impulse within a single neuron called?

Back

Action potential.

Front

What occurs during depolarization in a neuron?

Back

The inside of the neuron becomes less negatively charged compared to the outside.

Front

What is the charge of a neuron at rest (polarized)?

Back

The inside of the neuron is negatively charged compared to the outside.

Front

Which transport mechanism is used by the sodium-potassium pump?

Back

Active transport.

Front

What maintains the resting membrane potential in a neuron?

Back

Sodium-potassium pumps.

Front

What is the role of sodium channels in a neuron?

Back

They allow sodium ions to flow into the neuron during depolarization.

Front

What is the role of potassium channels in a neuron?

Back

They allow potassium ions to flow out of the neuron, helping to repolarize it.

Front

What is the threshold potential in a neuron?

Back

The minimum membrane potential that must be reached for an action potential to occur.

Front

What happens during the repolarization phase of an action potential?

Back

Potassium ions exit the neuron, restoring the negative charge inside.

Front

What is the refractory period in a neuron?

Back

The time after an action potential during which a neuron cannot fire another action potential.