Asked by Jennifer Canizales on Jul 09, 2024
Verified
Each night when you fall asleep, which area of your brain regulates the change in body rhythm as you move from wakefulness to the state of sleep?
A) the prefrontal cortex
B) the reticular activating system
C) a specialized segment of the hypothalamus
D) the lateral geniculate nuclei
Reticular Activating System
A network of neurons located in the brainstem that plays a key role in regulating wakefulness, alertness, and transitions between sleep and wakefulness.
Hypothalamus
A subcortical structure that plays a vital role in controlling many motivated behaviors, like eating, drinking, and sexual activity.
Prefrontal Cortex
A region of the brain associated with decision making, personality expression, cognitive planning, and moderating social behavior.
- Detail the characteristics of circadian rhythms and the impact of alterations in these natural cycles.
Verified Answer
AB
Antoinette BroomeJul 10, 2024
Final Answer :
C
Explanation :
The specialized segment of the hypothalamus, specifically the suprachiasmatic nucleus, regulates the sleep-wake cycle and controls the release of melatonin, which helps us fall asleep. While the other brain regions listed may be involved in sleep regulation, they are not specifically responsible for the transition from wakefulness to sleep.
Learning Objectives
- Detail the characteristics of circadian rhythms and the impact of alterations in these natural cycles.