Jorge takes a drink offered to him at a party. The next thing he knows, he wakes up in the middle of a field and cannot recall the night's events.

The possible answers for this question are:

A. a glutamate antagonist

B. an acetylcholine antagonist

C. a serotonin antagonist

D. an epinephrine agonist

The correct answers are:

A. a glutamate antagonist

B. an acetylcholine antagonist

Explanation:

A glutamate antagonist is a substance that is commonly used in clinical medicine as an anesthetic, another common used of this substance could be to treat the neurodegeneration caused by stroke, parkinson, epilepsia and some other neural problems, as it inhibits the glutamate receptors.

On the other side the acetylcholine antagonist works as an inhibitor of the muscarinic receptor, avoiding with this process synapses of the cells.