Look up: serotonin

1. 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.
   Found on http://www.bbc.co.uk/radio4/reith2003/gl
   
   
2. Serotonin
   ( 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 cluste...
   Found on http://www.eclipse.co.uk/moordent/page5.
   
   
3. Serotonin
   A hormone/neurotransmitter important to our mood state. See Depression!
   Found on http://www.gerardkeegan.co.uk/glossary/g
   
   
4. serotonin
   [n] - a neurotransmitter involved in e.g. sleep and depression and memory
   Found on http://www.webdictionary.co.uk/definitio
   
   
5. Serotonin
   One of the neurotransmitters used by the nerve cells in the brain. Together with dopamine, this neurotransmitter is believed to play a part in schizophrenia.
   Found on http://thewellnessshop.co.uk/healthandwe
   
   
6. serotonin
   (Learning Modules / Psychology / Measuring the unmeasurable) A neurotransmitter of the monoamine group that generally has an excitatory effect.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
7. serotonin
   (Learning Modules / Psychology / Stress management) A neurotransmitter that has a role in the regulation of mood.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
8. Serotonin
   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 le...
   Found on http://www.cancerhelp.org.uk/utilities/g
   
   
9. Serotonin
   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
   Found on http://www.medichecks.com/glossary.cfm?l
   
   
10. Serotonin
    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.
    Found on http://www.nas.org.uk/nas/jsp/polopoly.j
    
    
11. Serotonin
    Serotonin: 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. Changes in the serotonin levels in th...
    Found on http://www.medterms.com/script/main/art.
    
    
12. serotonin
    (= 5-hydroxytryptamine; 5-HT) A neurotransmitter and hormone(176 D), found in vertebrates, invertebrates and plants.
    Found on http://www.encyclo.co.uk/visitor-contrib
    
    
13. serotonin
    Synonym for 5-hydroxytryptamine ... <biochemistry, hormone> A neurotransmitter and hormone (176 kD), found in vertebrates, invertebrates and plants. It is synthesised from the amino acid tryptophan by enterochromaffin cells in the gut and bronchi. It is metabolised to 5-HIAA in the liver and t...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
14. serotonin
    5-hydroxytryptamine noun a neurotransmitter involved in e.g. sleep and depression and memory
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
15. serotonin
    (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...
    Found on http://www.encyclo.co.uk/local/21001
    
    
16. serotonin
    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]
    Found on http://www.britannica.com/eb/a-z/s/68
    
    
17. serotonin
    serotonin 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. Changes in the serotonin levels in the...
    Found on http://www.wordinfo.info/words/index/inf
    
    
18. Serotonin
    - ( 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 clus...
    Found on http://www.eclipse.co.uk/moordent/page5.
    
    
19. serotonin
    serotonin (ser"utō'nin) , organic compound that was first recognized as a powerful vasoconstrictor occurring in blood serum. It was partially purified, crystallized, and named in 1948, and its structure was deduced a year later. Independent work indicated that serotonin was widely dist...
    Found on http://www.infoplease.com/ce6/sci/A08445
    
    
20. Serotonin
    Serotonin or 5-hydroxytryptamine (5-HT) is a compound widely distributed in human tissue, particularly in the blood, wall of the intestine and the central nervous system. It acts as a neurotransmitter concerned especially with the process of sleep.
    Found on http://www.probertencyclopaedia.com/brow
    
    
21. serotonin
    Type: Term Pronunciation: ser′ō-tō′nin Definitions: 1. A vasoconstrictor, liberated by blood platelets, that inhibits gastric secretion and stimulates smooth muscle; present in relatively high concentrations in some areas of the central nervous system (hypothalamus, basal gangl...
    Found on http://www.medilexicon.com/medicaldictio
    
    
22. serotonin
    A chemical in the brain that affects mood and suppresses appetite.
    Found on http://www.johnshopkinshealthalerts.com/
    
    
23. Serotonin
    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.
    Found on http://www.obesityhelp.com/content/wls_g
    
    
24. Serotonin
    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.
    Found on http://www.obesityhelp.com/content/wls_g
    
    
25. serotonin
    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 ca...
    Found on http://www.cancer.gov/dictionary?expand=