Which of the following statements is true of the physiological effects of caffeine?
A) The pharmacological effects on the central nervous system (CNS) and the skeletal muscles are probably the basis for the wide use of caffeine-containing beverages.
B) With two cups of coffee taken close together (about 200 mg of caffeine), the cortex is deactivated, the electroencephalography (EEG) shows a calming pattern.
C) In the absence of tolerance, even 200 mg of caffeine will decrease the time it takes to fall asleep and will cause hypersomnia.
D) Lower dose levels of caffeine affect the autonomic centers of the brain, and heart rate and respiration can increase at this dose.

Question

Quizplus · Accepted Answer

Caffeine is a central nervous system stimulant, and its effects on the CNS and skeletal muscles contribute to its widespread use.

Which of the Following Statements Is True of the Physiological