The reticular activating system of the brainstem is continuously active while we are awake.Neurons in this region maintain the responsiveness of the brain by
A) reducing the number of action potentials fired by brainstem neurons.
B) decreasing the number of cycles of REM sleep.
C) hyperpolarizing cortical neurons.
D) firing action potentials in synchronized bursts.
E) releasing neurotransmitters that maintain the sensitivity of neurons in the thalamus and cortex.

Question

Quizplus · Accepted Answer

The reticular activating system releases neurotransmitters that maintain the sensitivity of neurons in the thalamus and cortex, which helps to maintain the responsiveness of the brain while we are awake. A, B, C, and D are incorrect because they do not accurately describe the function of the reticular activating system.

The Reticular Activating System of the Brainstem Is Continuously Active