Noradrenaline
Noradrenaline
Noradrenaline (pronounced: nor·ad·ren·a·line), also known as Norepinephrine, is a hormone and neurotransmitter that plays a significant role in the body's autonomic nervous system.
Etymology
The term "Noradrenaline" is derived from Latin, where "nor" is short for "normal" and "adrenaline" refers to the adrenal glands where the hormone is produced. The term "Norepinephrine" is more commonly used in the United States, while "Noradrenaline" is more commonly used in the United Kingdom.
Function
Noradrenaline is primarily involved in the body's fight or flight response. It is released into the bloodstream in response to stress or danger, leading to increased heart rate, blood pressure, and blood glucose levels. In the brain, noradrenaline acts as a neurotransmitter, transmitting signals between nerve cells.
Related Terms
- Adrenaline: A hormone that is chemically similar to noradrenaline and also plays a role in the fight or flight response.
- Dopamine: A neurotransmitter that is a precursor to noradrenaline.
- Sympathetic nervous system: The part of the autonomic nervous system that is responsible for the fight or flight response.
- Neurotransmitter: A chemical substance that transmits nerve impulses across a synapse.
- Hormone: A chemical substance produced in the body that controls and regulates the activity of certain cells or organs.
External links
- Medical encyclopedia article on Noradrenaline
- Wikipedia's article - Noradrenaline
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