A small cluster of norepinephrine synthesizing cell bodies called the ____ residing in the dorsal brain stem region of the reticular formation (RF)plays an important role in vigilance and arousal and is part of an ascending arousal pathway system that keeps the thalamus and cortex active in receiving and transmitting sensory information.

Question

Quizplus · Accepted Answer

The small cluster of norepinephrine synthesizing cell bodies referred to in the question is the locus ceruleus (LC) located in the dorsal brain stem region of the reticular formation (RF). The LC is responsible for vigilance and arousal and is part of an ascending arousal pathway system that keeps the thalamus and cortex active in receiving and transmitting sensory information. Therefore, choice D, locus ceruleus, is the best answer. Choices A, B, and C are incorrect as they do not accurately describe the structure referred to in the question.

A Small Cluster of Norepinephrine Synthesizing Cell Bodies Called the ____