Most Nerve Cell Fibers Outside the Brain and Spinal Cord

question 114

Multiple Choice

Most nerve cell fibers outside the brain and spinal cord are wrapped by a thin layer of cells that aid in the repair of neurons.This thin layer of cells is called

• A) myelin.
• B) neurilemma.
• C) acetylcholine.
• D) endorphins.

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Definitions:

Stimulus Substitution

A theory in classical conditioning suggesting that the conditioned stimulus acts as a substitute for the unconditioned stimulus, eliciting the same response.

Classical Conditioning

An educational mechanism where the consistent pairing of two stimuli occurs; the response which initially is drawn by the second stimulus, in time, is drawn by the first stimulus alone.

Conditioned Stimulus

A previously neutral stimulus that, after being repeatedly associated with an unconditioned stimulus, evokes a conditioned response.

Conditioned Fear

A learned response to a previously neutral stimulus that has become associated with a frightful event or situation.