With drug use, ___________ are seen in dopamine D1 receptors, which cause excitation and facilitate behavior, and _________ are seen in dopamine D2 receptors, which cause inhibition and suppress behavior.
A) increases; decreases
B) increases; increases
C) decreases; decreases
D) decreases; increases
E) fluctuations; increases

Question

Quizplus · Accepted Answer

Drug use leads to an increase in dopamine release, which increases the activation of dopamine D1 receptors, causing excitation and facilitating behavior. However, with prolonged drug use, there is a decrease in dopamine D2 receptor availability, leading to decreased inhibition and suppression of behavior. Therefore, the best choice is A, where there is an increase in dopamine D1 receptors (excitation) and a decrease in dopamine D2 receptors (inhibition) with drug use.

With Drug Use, ___________ Are Seen in Dopamine D1 Receptors