Opiates have a molecular structure that is similar to endorphins,our body's natural pain relievers.When Ahmed takes cold medicine with codeine in hopes of relieving a headache,the codeine stimulates the receptor sites that receive endorphins.Codeine is therefore a/an
A) agonist.
B) antagonist.
C) antipsychotic.
D) amphetamine.

Question

Quizplus · Accepted Answer

Codeine binds to the same receptor sites as endorphins and stimulates them, producing a similar effect to natural pain relief. This makes it an agonist.

Opiates Have a Molecular Structure That Is Similar to Endorphins,our