Asked by Monica Cheyenne on Jul 13, 2024
Verified
Mrs.Perry is teaching a class on the importance of sleep and rest to her first-year nursing students.How would she explain the purpose of the RAS system?
A) The RAS suppresses the brain centres.
B) The RAS controls the body biorhythm.
C) The RAS maintains wakefulness in the cerebral cortex.
D) The RAS sends stimuli from the cerebral cortex to the body.
RAS System
The Renin-Angiotensin System, a hormone system that regulates blood pressure and fluid balance in the body.
Wakefulness
A state of consciousness characterized by alertness and awareness of the surrounding environment, distinguishing it from sleep.
Cerebral Cortex
The outer layer of neural tissue of the cerebrum of the brain, playing a key role in memory, attention, perception, awareness, thought, language, and consciousness.
- Describe the physiological mechanisms that regulate sleep and wakefulness.
Verified Answer
TH
Teresa HarrisJul 18, 2024
Final Answer :
C
Explanation :
The RAS (reticular activating system) is responsible for maintaining wakefulness in the cerebral cortex. It receives sensory information from the environment and sends signals to the cortex to maintain wakefulness and attention.
Learning Objectives
- Describe the physiological mechanisms that regulate sleep and wakefulness.