Which of the following statements about the suprachiasmatic nucleus is FALSE?
A)The suprachiasmatic nucleus is your internal "biological clock."
B)The suprachiasmatic nucleus governs the timing of circadian rhythms, including the sleep/wake cycle and the mental alertness cycle.
C)The suprachiasmatic nucleus is a cluster of neurons located in the brain structure called the hypothalamus.
D)The suprachiasmatic nucleus secretes a naturally occurring compound called adenosine that increases mental alertness.

Question

Quizplus · Accepted Answer

The suprachiasmatic nucleus does govern the timing of circadian rhythms, including the sleep/wake cycle and the mental alertness cycle, and it is located in the hypothalamus. However, it does not secrete adenosine, a compound that is produced by the breakdown of ATP in various parts of the body and serves as a central nervous system depressant, not a stimulant.

Which of the Following Statements About the Suprachiasmatic Nucleus Is