Exam #2 Retake Review Questions Spring 2025

Front

What creates an action potential inside a neuron?

Back

An action potential is created when sodium channels open.

Front

What is the main part of a neuron that contains the nucleus?

Back

The Cell Body.

Front

What is the correct order of the direction of a message in a neuron?

Back

Dendrite - Cell Body - Axon - Synapse.

Front

What charge does the inside of an axon have when a neuron is resting?

Back

Negative charge.

Front

Which part of the brain is represented by the letter C in the illustration?

Back

Parietal Lobe.

Front

What is the function of dendrites in a neuron?

Back

Dendrites receive signals from other neurons.

Front

What role does the axon play in a neuron?

Back

The axon transmits electrical impulses away from the cell body.

Front

What happens to potassium channels during an action potential?

Back

Potassium channels close.

Front

What is the synapse?

Back

The synapse is the junction between two neurons where communication occurs.

Front

What is the resting potential of a neuron?

Back

The resting potential is typically around -70 mV.