In some cases,repeated use of a drug leads to pharmacodynamic tolerance,which is based on
A)altered liver function.
B)learning.
C)reduced sensitivity of neurons.
D)slower metabolism.

Question

Quizplus · Accepted Answer

Pharmacodynamic tolerance refers to reduced sensitivity of neurons to the drug, meaning that the drug's effects are diminished with repeated use. This is caused by changes in the brain's receptors and signal transduction pathways, rather than changes in liver function or metabolism. Learning may play a role in some cases of tolerance, but it is not the primary mechanism.

In Some Cases,repeated Use of a Drug Leads to Pharmacodynamic