Adrenergic neurons

Adrenergic neurons are nerve cells that release norepinephrine (noradrenaline) as their primary neurotransmitter. They are key components of the sympathetic nervous system, orchestrating the "fight-or-flight" response by increasing heart rate, blood pressure, and alertness. Found in brainstem nuclei like the locus coeruleus and sympathetic ganglia, they regulate arousal, attention, and stress responses. Dysfunction is linked to anxiety, depression, and hypertension.