Alex hears a loud explosion outside his window.He immediately stands up and becomes more alert and attentive to his surroundings.Which part of Alex's brain has most likely been activated by the sudden explosion?

Question

Quizplus · Accepted Answer

When excitatory fibers are stimulated by various external stimuli (noise, bright light, or danger), the degree of alertness increases, preparing the body for a situation that requires action. The excitatory fibers are usually referred to as the reticular activating system (RAS).

Alex Hears a Loud Explosion Outside His Window