β-adrenergic receptor

β-adrenergic receptors are specialized proteins located on the surface of certain cells in the body, especially in the heart, lungs, and blood vessels. They detect signals from stress hormones like adrenaline, which prepare the body for a "fight or flight" response. When activated, these receptors trigger changes such as increased heart rate, expanded airways, and release of energy stores. They play a key role in how your body reacts to physical or emotional stress, helping you respond quickly and effectively to various situations.