__________ tolerance to psychoactive drugs is tolerance that occurs because less drug gets to its site of action in the brain.
A) Contingent
B) Metabolic
C) Situationally specific
D) Functional
E) In vitro

Question

Quizplus · Accepted Answer

Metabolic tolerance occurs due to an increase in the rate of drug metabolism, resulting in less drug being available to reach its site of action in the brain. This type of tolerance is different from other types such as contingent, situationally specific, and functional tolerance. In vitro refers to experiments conducted outside of a living organism, and is not relevant to drug tolerance.

__________ Tolerance to Psychoactive Drugs Is Tolerance That Occurs Because