Caffeine stimulates the brain
A)by causing more neurotransmitters to be released.
B)through the mimicry of specific neurotransmitters in the brain.
C)by blocking chemicals that normally inhibit or slow nerve activity.
D)by prolonging the action of certain neurotransmitters.

Question

Quizplus · Accepted Answer

Caffeine primarily works by blocking adenosine receptors in the brain, which normally promote sleep and relaxation, thereby inhibiting or slowing down nerve activity.

Caffeine Stimulates the Brain