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Chapter 5: Problem 12

Amphetamines work by increasing the levels of _____________ in a variety of ways A. GABA and glycine B. melatonin C. acetylcholine D. norepinephrine and dopamine

Short Answer

Expert verified
Answer: D. norepinephrine and dopamine

Step by step solution

01

Eliminate incorrect options

Start by eliminating options that are not related to the effect of amphetamines. GABA and glycine are both inhibitory neurotransmitters, and amphetamines are known to have a stimulating effect, so it is unlikely that increasing levels of GABA and glycine would be the primary mechanism of action for amphetamines. Melatonin is involved in regulating sleep and circadian rhythms, but it does not have the stimulating effects that are characteristic of amphetamines. Therefore, Options A and B can be eliminated.
02

Evaluate the remaining options

With Options A and B eliminated, we are left with Options C and D. Acetylcholine is a neurotransmitter involved in muscle control, memory, and other functions. While it might play a role in some of the effects of amphetamines, it is not the primary mechanism of action for these drugs.
03

Identify the correct answer

Finally, we are left with Option D, which states that amphetamines work by increasing the levels of norepinephrine and dopamine. These neurotransmitters are known to be involved in the regulation of mood, attention, motivation, and reward, which makes them a more likely target for the stimulating effects of amphetamines. Thus, the correct answer is: D. norepinephrine and dopamine

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