adrenergic receptor theory

The adrenergic receptor theory explains how certain nerve signals and hormones, like adrenaline, activate specific receptors on cells called adrenergic receptors. These receptors respond to adrenaline or similar chemicals, triggering various body responses such as increased heart rate, dilation of airways, or blood vessel constriction. There are different types of adrenergic receptors, each affecting different tissues. This system helps regulate the body's fight-or-flight response, preparing you for action by adjusting heart rate, blood flow, and energy use efficiently.