Studies of the mechanism of action of the amphetamines have focused mainly on
A. serotonin and the endorphins.
B. GABA and glutamate.
C. nicotinic receptors.
D. release of norepinephrine and dopamine.
D
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Which of the following is true about MAOIs and tricyclics?
A) They are used to treat schizophrenia. B) They are not effective C) They are not widely used because of the potential for dangerous side effects. D) They work by affecting the activity of GABA.
Experiments by Deutsch and colleagues allowed rats to eat until they were satiated and then withdrew a few milliliters of diet from their stomach using an implanted catheter. After the withdrawal, the rats
A) ate until they became obese. B) reported no hunger pangs. C) showed evidence of continued short-term satiety. D) experienced periodic feelings of hunger. E) ate enough food to replace that withdrawn from the stomach.