noun
- A hormone and neurotransmitter produced by the adrenal glands and nerve cells that increases heart rate and blood pressure in response to stress or danger.
Usage: Also called norepinephrine (especially in U.S. medical contexts); Medical/scientific term
Examples
- When you experience fear, your body releases noradrenaline to prepare for fight or flight.
- Noradrenaline levels increase during stressful situations, causing your heart to beat faster.
- The doctor explained that noradrenaline helps regulate blood pressure and attention.
- Athletes may experience elevated noradrenaline during competition.
- Certain medications work by affecting noradrenaline levels in the brain.