
1) Amine
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1) Certain neurotransmitter 2) Monoamine neurotransmitter 3) Natural mood alterer
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https://www.crosswordclues.com/clue/serotonin

A monoamine neurotransmitter believed to play many roles including, but not limited to, temperature regulation, sensory perception and the onset of sleep. Neurons using serotonin as a transmitter are found in the brain and in the gut. A number of antidepressant drugs are targeted to brain serotonin systems.
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http://www.bbc.co.uk/radio4/reith2003/glossary.shtml

A monoamine neurotransmitter believed to play many roles, including but not limited to temperature regulation, sensory perception, and the onset of sleep. Neurons using serotonin as a transmitter are found in the brain and gut. Several antidepressant drugs are targeted to brain serotonin systems.
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http://www.brainfacts.org/glossary

a chemical substance that is derived from the amino acid tryptophan. It occurs in the brain, intestinal tissue, blood platelets, and mast cells and ... [14 related articles]
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http://www.britannica.com/eb/a-z/s/68

A hormone found in the brain, platelets, digestive tract, and pineal gland. It acts both as a neurotransmitter (a substance that nerves use to send messages to one another) and a vasoconstrictor (a substance that causes blood vessels to narrow). A lack of serotonin in the brain is thought to be a cause of depression. Also called 5-hydroxytryptamine...
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http://www.cancer.gov/dictionary?expand=S

( 5 Hydroxytryptamine) is present throughout the body, especially in blood platelets and in the intestines. Its release from blood platelets contributes to the pain, vasoconstriction and inflammation after injury. In nervous tissue it functions as a neurotransmitter, mainly in the midbrain in clusters of cells called the raphe, and in the medulla. ...
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A major neurotransmitter involved in depression and anxiety. A quarter to a third of people with autism show abnormally high levels of serotonin in the blood.
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http://www.encyclo.co.uk/local/20898

(ser″o-to´nin) a hormone and neurotransmitter, 5-hydroxytryptamine (5-HT), found in many tissues, including blood platelets, intestinal mucosa, pineal body, and central nervous system; it has many physiologic properties, including inhibition of gastric secretion, stimulation of smooth muscles, and production...
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http://www.encyclo.co.uk/local/21001

a neurotransmitter that regulates mood, emotion, sleep and appetite.
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A hormone, also called 5-hydroxytryptamine, in the pineal gland, blood platelets, the digestive tract, and the brain. Serotonin acts both as a chemical messenger that transmits nerve signals between nerve cells and that causes blood vessels to narrow.
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http://www.encyclo.co.uk/local/22138

A neurotransmitter found in the brain that affects mood and appetite.
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http://www.encyclo.co.uk/local/22138

A hormone , also called 5-hydroxytryptamine , in the pineal gland , blood platelets, the digestive t
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http://www.encyclo.co.uk/local/22417

(= 5-hydroxytryptamine; 5-HT) A neurotransmitter and hormone(176 D), found in vertebrates, invertebrates and plants.
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(Learning Modules / Psychology / Measuring the unmeasurable) A neurotransmitter of the monoamine group that generally has an excitatory effect.
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(Learning Modules / Psychology / Stress management) A neurotransmitter that has a role in the regulation of mood.
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A hormone/neurotransmitter important to our mood state. See Depression!
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http://www.gerardkeegan.co.uk/glossary/gloss_a.htm

A chemical in the brain that affects mood and suppresses appetite.
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http://www.johnshopkinshealthalerts.com/reports/nutrition_weight_control/92

A hormone, also called 5-hydroxytryptamine, in the pineal gland, blood platelets, the digestive tract, and the brain. Serotonin acts both as a chemical messenger that transmits nerve signals between nerve cells and that causes blood vessels to narrow.
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http://www.obesityhelp.com/content/wls_glossary.html

A hormone found in the brain, platelets, digestive system and the pineal gland (a small gland in the brain). It acts as a chemical messenger, sending messages between nerves (neurotransmitter). It also sends messages to make blood vessels narrower. Some carcinoid tumours make serotonin and high levels in the body can cause diarrhoea, wheezing and...
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https://www.encyclo.co.uk/local/20753

a chemical that transmits nerve impulses in the brain, causes blood vessels to constrict (narrow) at sites of bleeding, and stimulates smooth muscle movement in the intestines
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https://www.encyclo.co.uk/local/20875
5-hydroxytryptamine noun a neurotransmitter involved in e.g. sleep and depression and memory
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https://www.encyclo.co.uk/local/20974

A neurotransmitter that regulates many functions, including mood, appetite, and sensory perception.
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https://www.encyclo.co.uk/local/22569

A neurotransmitter involved in sleep, wakefulness, appetite, aggression, impulsivity, sensory perception, temperature regulation, pain suppression, and mood.
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https://www.sparknotes.com/psychology/psych101/glossary/terms/

a neurotransmitter involved in e.g. sleep and depression and memory
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https://www.vocabulary.com
No exact match found.