The Anterior Rami of the Spinal Nerves Form Nerve Plexuses

question 42

Multiple Choice

The anterior rami of the spinal nerves form nerve plexuses in all regions except the _________ region.

• A) thoracic
• B) cervical
• C) lumbar
• D) sacral

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Definitions:

Variable-Interval

A schedule of reinforcement where rewards are given after unpredictable time intervals, in the context of behavior conditioning.

Fixed-Ratio

A schedule of reinforcement where a response is rewarded only after a specified number of responses, encouraging a high, stable rate of responding.

Variable-Ratio

A reinforcement schedule in which a response is reinforced after an unpredictable number of responses, leading to high and steady response rates.

Latent Learning

Learning that occurs without reinforcement but is not demonstrated until there is an incentive to perform.