Locus ceruleus
Locus Coeruleus
Locus coeruleus (pronunciation: /ˈloʊkəs sɪˈruːliəs/), also known as the blue spot, is a region in the brainstem involved in physiological responses to stress and panic. The term "locus coeruleus" is Latin for "blue place", referring to its bluish appearance due to high content of melanin pigments.
Etymology
The term "locus coeruleus" is derived from Latin, where "locus" means "place" and "coeruleus" means "blue". This name was given due to the bluish coloration of this region in the brainstem, which is caused by the presence of a pigment called neuromelanin.
Function
The Locus coeruleus is primarily involved in responses to stress and panic. It is the principal site for brain synthesis of norepinephrine, or noradrenaline, a neurotransmitter that regulates arousal, attention, and stress responses. The locus coeruleus also plays a role in the sleep-wake cycle, promoting wakefulness and alertness.
Related Terms
- Norepinephrine: A neurotransmitter synthesized in the locus coeruleus, involved in regulating arousal, attention, and stress responses.
- Neuromelanin: A pigment found in the locus coeruleus, responsible for its bluish coloration.
- Brainstem: The part of the brain where the locus coeruleus is located, connecting the cerebrum with the spinal cord.
- Neurotransmitter: Chemicals like norepinephrine that transmit signals across a synapse from one neuron to another.
See Also
External links
- Medical encyclopedia article on Locus ceruleus
- Wikipedia's article - Locus ceruleus
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