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Adrenaline Signaling

Meaning

Adrenaline signaling, scientifically known as epinephrine signaling, describes the complex biochemical cascade initiated by the binding of the catecholamine adrenaline to its specific adrenergic receptors on target cells. This process is a core component of the body’s sympathetic nervous system response, driving immediate physiological changes necessary for rapid action. It constitutes a rapid, potent form of communication that prepares the body for a perceived emergency or intense physical demand. The resulting cellular changes profoundly impact cardiovascular function, metabolic rate, and smooth muscle activity. Clinically, understanding this signaling pathway is vital for managing acute stress responses and conditions like pheochromocytoma.