cervical ganglia

Cervical ganglia are clusters of nerve cell bodies located in the neck region, part of the sympathetic nervous system that controls involuntary functions like blood flow, sweat production, and eye dilation. They lie along the large arteries in the neck and act as relay stations transmitting signals between the brain and various structures in the head, neck, and upper chest. These ganglia help regulate responses to stress, temperature, and blood pressure, playing a crucial role in maintaining bodily balance and reacting to stimuli.