Neurons and Action Potential Review

Front

What is depolarization?

Back

Depolarization is the process by which a membrane potential becomes less negative, moving towards zero, often leading to the generation of an action potential.

Front

What is the axon in a neuron?

Back

The axon is the long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body.

Front

What are motor neurons?

Back

Motor neurons are a type of neuron that sends nerve impulses to muscles and glands, facilitating movement and response.

Front

What is the myelin sheath?

Back

The myelin sheath is an insulating layer that surrounds parts of the axon, helping to protect and propagate action potentials more efficiently.

Front

What makes up the central nervous system (CNS)?

Back

The central nervous system (CNS) is made up of the brain and spinal cord.

Front

What is hyperpolarization?

Back

Hyperpolarization is the process by which a membrane potential becomes more negative than the resting potential.

Front

What is repolarization?

Back

Repolarization is the process of restoring the membrane potential to its resting state after depolarization.

Front

What are dendrites?

Back

Dendrites are the branched extensions of a neuron that receive signals from other neurons.

Front

What is the function of the Node of Ranvier?

Back

The Node of Ranvier is a gap in the myelin sheath that facilitates the rapid conduction of action potentials along the axon.

Front

What is the role of interneurons?

Back

Interneurons are neurons that connect other neurons within the central nervous system, processing information and facilitating communication.