Generalized, Drug X has an inhibitory effect in the central nervous system (CNS). Caffeine's stimulatory effects, on the other hand, are primarily (although not entirely) credited to its inhibition of Drug X by binding to the same receptors, and therefore effectively blocking Drug X receptors in the CNS. This reduction in Drug X activity leads to increased activity of the neurotransmitters dopamine and glutamate. Name Drug X?
- a) Adenosine
- Adenosine plays an important role in biochemical processes, such as energy transfer—as adenosine triphosphate (ATP). It is also an inhibitory neurotransmitter, believed to play a role in promoting sleep and suppressing arousal, with levels increasing in the brain with each hour an organism is awake.