Question 4#

What is the relationship between drug concentration and pharmacologic effect known as?

A. Pharmacokinetics
B. Pharmacogenetics
C. Pharmacology
D. Pharmacodynamics

Correct Answer is D


d. Pharmacodynamics. Pharmacodynamics has been defined as the study of the biologic effects resulting from the interaction between drugs and biologic systems. Pharmacokinetic principles consider drug distribution, metabolism, clearance, and bioavailability, whereas pharmacodynamic principles take this one step further and relate these factors to pharmacologic response. Pharmacogenetics is the study of heredity on variations in drug response among individuals and populations. Pharmacogenetic studies have established that genetics play an important role in the dose–concentration– response relationships of medications, whereas pharmacology is simply the study of drugs.