adrenergic signaling pathways

Adrenergic signaling involves the body's response to adrenaline (epinephrine) and noradrenaline (norepinephrine), which are hormones and neurotransmitters. These molecules bind to specific receptors called adrenergic receptors on cells, mainly in the heart, blood vessels, and lungs. When activated, these receptors trigger a cascade of signals that prepare the body for fight-or-flight responses—like increasing heart rate, widening airways, and redirecting blood flow to muscles. This pathway helps the body react quickly to stress or danger, ensuring energy and resources are directed where needed for immediate action.