Caffeine, the most commonly consumed drug on the planet, is known to influence several physiological processes. Test your basic knowledge of the effect of caffeine on physiological systems by taking this simple quiz.
(1) Caffeine is a stimulant.
(2) Caffeine consumption leads to elevated levels of the neurotransmitter dopamine within the brain.
(3) Caffeine is:
(4) This compound is the world's most commonly used psychoactive drug:
(5) Caffeine consumption leads to the release of epinephrine (adrenaline) from the adrenal glands.