CNS PNS Neurons & Action Potentials

Front

What is the function of the Axon Terminal?

Back

The Axon Terminal is responsible for transmitting signals to other neurons or target cells by releasing neurotransmitters.

Front

What is the role of the Dendrite in a neuron?

Back

Dendrites receive incoming signals from other neurons and transmit them to the cell body.

Front

What is the function of the Axon in a neuron?

Back

The Axon conducts electrical impulses away from the cell body to other neurons or muscles.

Front

What is the Cell Body of a neuron?

Back

The Cell Body contains the nucleus and organelles, and it integrates incoming signals.

Front

What happens during depolarization of a neuron?

Back

During depolarization, sodium gated channels open, allowing sodium ions to enter the neuron, making the inside more positive.

Front

What is the refractory period in action potentials?

Back

The refractory period is the time after an action potential during which a neuron cannot fire another action potential.

Front

What occurs during the hyperpolarization phase of an action potential?

Back

During hyperpolarization, the membrane potential becomes more negative than the resting potential due to the efflux of potassium ions.

Front

What are sodium gated channels?

Back

Sodium gated channels are protein channels in the neuron's membrane that open in response to depolarization, allowing sodium ions to flow into the cell.

Front

What are potassium gated channels?

Back

Potassium gated channels are protein channels that open in response to depolarization and allow potassium ions to flow out of the neuron, contributing to repolarization.

Front

What is an action potential?

Back

An action potential is a rapid, temporary change in the membrane potential of a neuron, allowing it to transmit signals.