When a Neuron Is Polarized

question 216

Multiple Choice

When a neuron is polarized:

• A)the exterior fluid surrounding the neuron is more negatively charged than the interior of the neuron.
• B)an action potential will travel down the dendrites causing the release of neurotransmitters.
• C)the electrical charge across the neuron's membrane is balanced with the same charge outside as inside.
• D)the interior of the neuron's axon is more negatively charged than the exterior fluid surrounding the axon.

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Definitions:

Multiple Sclerosis

An autoimmune disease affecting the central nervous system, leading to impaired mobility and cognition.

Myelin

A fatty substance that surrounds nerve fibers, increasing the speed at which electrical impulses travel along the nerve cells.

Axons

Long, threadlike parts of nerve cells along which impulses are conducted from the cell body to other cells.

Propagating Action Potential

The process by which an electrical impulse travels along the length of a neuron, enabling communication within the nervous system.