norepinefriinille
Norepinephrine, also known as noradrenaline, is a naturally occurring chemical in the body that functions as both a neurotransmitter and a hormone. It plays a crucial role in the "fight or flight" response, a physiological reaction triggered by stress or perceived danger. When the body encounters a threat, norepinephrine is released from nerve endings and the adrenal glands. This release causes a cascade of effects, including increased heart rate, elevated blood pressure, and the diversion of blood flow to muscles and the brain. These physiological changes prepare the body for immediate action.
As a neurotransmitter, norepinephrine transmits signals between nerve cells in the brain and throughout the nervous
In its role as a hormone, norepinephrine circulates in the bloodstream, influencing various organs and systems.