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noradrenaline

 

Definitions from WordNet

Noun noradrenaline has 1 sense
  1. noradrenaline, norepinephrine - a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
    --1 is a kind of catecholamine; monoamine neurotransmitter; vasoconstrictor, vasoconstrictive

Definitions from the Web

Noradrenaline

Description

Noradrenaline, also known as norepinephrine, is a hormone and neurotransmitter that plays a crucial role in the human body's stress response. It is a type of catecholamine, predominantly produced by the adrenal medulla, and acts as a chemical messenger in the sympathetic nervous system.

Senses

1. Hormone

In its role as a hormone, noradrenaline is released into the bloodstream by the adrenal medulla, responding to stress or low blood pressure. It promotes vasoconstriction, increasing blood pressure and redirecting blood flow to vital organs.

Sample sentence: The increased secretion of noradrenaline during a stressful situation helps prepare the body for the fight-or-flight response.

2. Neurotransmitter

As a neurotransmitter, noradrenaline functions within the central nervous system to regulate various physiological processes such as arousal, attention, and mood.

Sample sentence: Noradrenaline imbalance in the brain has been associated with certain mood disorders, such as depression and anxiety.

3. Medicinal Uses

Noradrenaline is also used in medicine as a vasoconstrictor to treat conditions such as low blood pressure, shock, and certain types of cardiac arrest.

Sample sentence: In emergency situations, intravenous administration of noradrenaline can help stabilize a patient's blood pressure.

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