Constricts blood vessels, which helps maintain blood pressure in times of stress.Increases alertness, arousal and attention.What does norepinephrine do in the body?Īs a neurotransmitter in your brain and spinal cord, norepinephrine: Medically, the flight-or-flight response is known as the acute stress response. Norepinephrine is part of your sympathetic nervous system, which is part of your body’s emergency response system to danger - the “fight-or-flight” response. Norepinephrine is made from nerve cells in the brainstem area of your brain and in an area near your spinal cord. As a hormone, it’s released by your adrenal glands, which are hat-shaped glands that sit on top of each kidney.Īs a neurotransmitter, norepinephrine is made from dopamine. As a neurotransmitter, it’s a chemical messenger that helps transmit nerve signals across nerve endings to another nerve cell, muscle cell or gland cell. ![]() ![]() Norepinephrine, also called noradrenaline, is both a neurotransmitter and a hormone.
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