1 Drug Receptors Flashcards
1
Q
What is affinity?
A
used to describe the amount of attraction between a drug and a receptor.
2
Q
What is efficacy?
A
indicates that the drug will
activate the receptor and will subsequently lead to a change in the function of the cell.
3
Q
With a ______ dose, few receptors are bound by the drug?
A
Low
4
Q
With a ______ dose, ALL receptors are bound by the drug
A
Maximal
5
Q
A drug that can bind to a receptor and initiate a change in the function of the cell is referred to as an…
A
Agonist
6
Q
Do agonists have affinity or efficacy?
A
Both affinity and efficacy
7
Q
A drug that binds to a receptor but does not cause a change in cell activity is referred to as an…
A
Antagonist
8
Q
Do antagonists have affinity or efficacy?
A
Affinity only
9
Q
Is methadone an agonist or antagonist?
A
Antagonist
