Test 1 Flashcards
the specific molecular changes produced by a drug when it binds to a particular target site or receptor
drug action
when drug-produced molecular changes lead to more widespread alterations in physiological or psychological functions
drug effects
drug effects based on the physical and biochemical interactions of a drug with a target site in living tissue
specific effects
drug effects based not on the chemical activity of a drug-receptor interaction, but on certain unique characteristics of an individual
nonspecific effects
the amount of drug in the blood that is free to bind at specific target sites to elicit drug action
bioavailability
What are the 5 factors that contribute to the pharmacokinetic component of drug action?
route of administration absorption and distribution binding characteristics inactivation elimination
determines how much drug is liberated and absorbed into the blood, how quickly it reaches the target, and how quickly the drug takes effect
route of administration
chemicals added to drugs to facilitate the drug’s ability to exist in different forms
excipients
What are the two factors ionization depends on?
acidity and drug ionization characteristics
Apparent volume is heavily influenced by what?
lipid solubility
the relative amount of drug that leaves circulation and enters organs
apparent volume (Vd)
the process of one drug leaving one site for another based on blood flow and lipid solubility
redistribution
the ability of a drug to move across the membrane
lipid solubility
inactive sites where drug binding occurs
drug depots
type of tolerance that causes a decrease in potency due to the reduction in efficacy through which drug carries out action
pharmacodynamic tolerance