Dominic is a marathon runner.He says that whenever he runs,he feels euphoric.He cannot begin his day without running for an hour.In the context of neurotransmitters,which of the following is most likely responsible for his feelings of pleasure from running?
A)the action of serotonin depletion during physical exertion
B)the extended "high" from GABA reuptake
C)the compensatory effects of acetylcholine
D)the release of endorphins

Question

Quizplus · Accepted Answer

Endorphins are the body's natural painkillers that are released during physical activity. They can produce feelings of euphoria and pleasure, which is likely responsible for Dominic's feelings after running. Serotonin depletion during physical exertion is associated with fatigue and low mood. GABA reuptake is not directly related to feelings of pleasure during physical activity. Compensatory effects of acetylcholine are not associated with euphoria or pleasure.

Dominic Is a Marathon Runner