The Whitish, Fatty Substance That Surrounds Some Axons and Aids

question 71

Multiple Choice

The whitish, fatty substance that surrounds some axons and aids conduction of a nerve impulse down the axon is called

• A)myelin.
• B)neurilemma.
• C)synaptic vesicles.
• D)neurotransmitters.

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Definitions:

Axons

Long nerve fibers that are part of neurons, responsible for transmitting electrical impulses away from the neuron's cell body.

Action Potentials

Brief electrical impulses that are the means by which information is transmitted along neurons and across synapses.

Endorphins

Endorphins are natural chemicals in the body that interact with brain receptors to reduce pain perception and lead to feelings of euphoria, often referred to as the body's "feel-good" hormones.

Contractions

The process of muscles becoming shorter and tighter, often referring to the process of childbirth where the muscles of the uterus tighten.