Brian Is a Cross-Country Runner

question 162

Multiple Choice

Brian is a cross-country runner. He claims that he really enjoys running because he gets a wonderful "high" after running long distances. Since he knows you are taking a psychology class he asks you to explain what causes his "runner's high". You tell him that as he runs

• A) serotonin blacks the pain receptors in his skin.
• B) dopamine prevents his muscles from tightening up and causing pain.
• C) endorphins block the chemicals that transmit pain to the brain.
• D) acetylcholine is depleted in the hippocampus, blocking the formation of pain memory.

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