Pharmacodynamics

Pharmacodynamics ( 10 Questions)

A nurse is preparing to administer a medication that acts as an antagonist at a specific receptor. What effect will this medication have?



Correct Answer: D

An antagonist is a medication that binds to a specific receptor and blocks its activation, preventing other medications or endogenous ligands from activating it. A medication that acts as an antagonist at a specific receptor will block the activity of that receptor.

a. An antagonist blocks, not increases, the activity of the receptor it binds to.

b. An antagonist does not directly decrease the activity of the receptor it binds to but prevents its activation by other medications or endogenous ligands.

c. An antagonist has an effect on the activity of the receptor it binds to by blocking its activation.




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