Locus coeruleus
Locus Coeruleus
Locus coeruleus (pronunciation: loh-kus kuh-roo-lee-uhs) is a small nucleus in the pons part of the brainstem. It is involved in physiological responses to stress and panic. The locus coeruleus is the principal site for brain synthesis of norepinephrine, or noradrenaline.
Etymology
The term "locus coeruleus" is Latin for 'the blue spot,' due to its color in unstained brain tissue. It was first described by Felix Vicq-d'Azyr, a French anatomist and physician, in 1786.
Function
The locus coeruleus is involved in several functions of the body, including arousal and sleep-wake cycle regulation, attention, and memory. It also plays a crucial role in the body's response to stress and panic.
Related Terms
- Norepinephrine: A neurotransmitter synthesized in the locus coeruleus.
- Pons: A part of the brainstem where the locus coeruleus is located.
- Brainstem: The posterior part of the brain, continuous with the spinal cord.
- Neurotransmitter: A substance that transmits nerve impulses across a synapse.
- Stress: A state of mental or emotional strain or tension resulting from adverse or demanding circumstances.
- Panic: Sudden uncontrollable fear or anxiety, often causing wildly unthinking behavior.
See Also
External links
- Medical encyclopedia article on Locus coeruleus
- Wikipedia's article - Locus coeruleus
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