Which compound competes with adenosine for presynaptic autoreceptors, thus preventing adenosine from inhibiting transmitter release.
A) Amphetamine
B) Tetrodotoxin
C) Botulinum toxin
D) Caffeine

Question

Quizplus · Accepted Answer

Caffeine is known to compete with adenosine for presynaptic autoreceptors, which prevents adenosine from inhibiting neurotransmitter release. This ultimately leads to increased excitability of neurons and decreased fatigue. Amphetamine, tetrodotoxin, and botulinum toxin do not have the same mechanism of action as caffeine in this context.

Which Compound Competes with Adenosine for Presynaptic Autoreceptors, Thus Preventing