A sleepy driver rounds a bend and sees a deer standing in the road.The driver snaps to attention and applies the brakes because his _____ aroused the rest of his brain and helped him to avert an accident.
A)parasympathetic nervous system.
B)reticular activating system (RAS).
C)thalamus.
D)pituitary gland.

Question

Quizplus · Accepted Answer

The reticular activating system (RAS) is responsible for regulating arousal and alertness in the brain. In this scenario, the sight of the deer suddenly awakened and alerted the driver, allowing him to avoid an accident. The other options listed are not directly involved in this process.

A Sleepy Driver Rounds a Bend and Sees a Deer