Norepinephrine is released by the adrenal glands and acts as both a hormone and a neurotransmitter. It plays a key role in the body's fight-or-flight response, mobilizing energy reserves and increasing heart rate, blood pressure, and blood flow to the muscles. Norepinephrine also affects mood, attention, and cognition, helping to enhance focus and arousal.

Définition et signification de « norepinephrine » en anglais

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