An individual awakens from a sound sleep in the middle of the night because of abdominal pain. Why does this happen?
A) Stimuli from peripheral organs to the RAS
B) Stimuli to the wake center in the cerebral cortex
C) Messages from chemoreceptors to the brain
D) Messages from baroreceptors to the spinal cord

Question

Quizplus · Accepted Answer

The Reticular Activating System (RAS) is responsible for wakefulness and alertness. Stimuli from peripheral organs, such as pain signals from the abdomen, can activate the RAS, leading to awakening.

An Individual Awakens from a Sound Sleep in the Middle