Which of the following factors link circadian control of sleep and wake cycles with the environment? (Select all that apply.)
A) Sound
B) Light
C) Physical activity
D) Melatonin
E) Caffeine

Question

Quizplus · Accepted Answer

Light directly influences the circadian rhythm by affecting the production of melatonin, a hormone that regulates sleep-wake cycles. Physical activity can also influence circadian rhythms by promoting adjustments in the timing of sleep. Melatonin itself is a key hormone that directly links the body's sleep-wake cycle with environmental light-dark cycles.

Which of the Following Factors Link Circadian Control of Sleep