In Which of the Following Would the Rate of Impulse

question 84

Multiple Choice

In which of the following would the rate of impulse conduction be the greatest?

• A)a myelinated fiber of 10-µm diameter
• B)a nonmyelinated fiber of 20-µm diameter
• C)a myelinated fiber of 1-µm diameter
• D)a nonmyelinated fiber of 10-µm diameter
• E)the same in all because of the all-or-none principle

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Definitions:

Drug Addiction

A chronic, relapsing disorder characterized by compulsive drug seeking, continued use despite harmful consequences, and long-lasting changes in the brain.

Conditioned Response

A learned response to a previously neutral stimulus that has become conditioned through association with an unconditioned stimulus.

Contextual Cues

are environmental or situational factors that affect behavior by signaling the appropriateness of certain responses.

Overdose

The ingestion or application of a substance in quantities greater than are recommended or generally practiced, leading to a serious or lethal toxic state.