Look up: Melatonin


  1. Melatonin
    Produced from serotonin, melatonin is released by the pineal gland into the bloodstream. It affects physiological changes related to time and lighting cycles.
    Found op http://www.bbc.co.uk/radio4/reith2003/glossary.shtml

  2. melatonin
    [n] - hormone secreted by the pineal gland
    Found op http://www.webdictionary.co.uk/definition.php?query=melatonin

  3. Melatonin
    is a hormone produced in the pineal gland. See melatonin under Circadian rhythm.
    Found op http://www.bcpa.co.uk/glossary.htm

  4. Melatonin
    Hormone which regulates our biological clock. Used as a treatment for sleep disorders.
    Found op http://www.researchautism.net/glossary.ikml?l=m

  5. Melatonin
    Melatonin: A hormone produced by the pineal gland, melatonin is intimately involved in regulating the sleeping and waking cycles, among other processes. Melatonin supplements are sometimes used by people who have chronic insomnia. Always see your doctor before taking melatonin, as it is not recommen...
    Found op http://www.medterms.com/script/main/art.html?articlekey=11640

  6. melatonin
    (= N-acetyl 5-methoxytryptamine) A hormone secreted by the pineal gland. In lower vertebrates causes aggregation of pigment in melanophores, and thus lightens skin. In humans believed to play a role in establishment of circadian rhythms, and purported to help overcome the effects of jet-lag.
    Found op http://www.encyclo.co.uk/visitor-contributions.php

  7. melatonin
    <hormone> A hormone secreted by the pineal gland. ... In lower vertebrates causes aggregation of pigment in melanophores and thus lightens skin. In humans believed to play a role in establishment of circadian rhythms. ... (13 Nov 1997) ...
    Found op http://www.mondofacto.com/facts/dictionary?melatonin

  8. melatonin
    noun hormone secreted by the pineal gland
    Found op http://wordnetweb.princeton.edu/perl/webwn?s=melatonin

  9. melatonin
    (mel″ә-to´nin) an indoleamine hormone synthesized and released by the pineal body during the hours of darkness; it may have a role in the control of the regulation of gonadotropin release.
    Found op http://www.encyclo.co.uk/local/21001

  10. melatonin
    hormone secreted by the pineal gland, a tiny endocrine gland situated at the centre of the brain. Melatonin was discovered in 1958 by American ... [3 related articles]
    Found op http://www.britannica.com/eb/a-z/m/67



  1. Melatonin
    [album] Melatonin is Jonathan Seet`s first album, released independently in 2000. ==Track listing== ...
    Found op http://en.wikipedia.org/wiki/Melatonin_(album)

  2. Melatonin
    Melatonin n, also known chemically as ``N``-acetyl-5-methoxytryptamine, is a naturally occurring compound found in animals, plants, and microbes. In animals, circulating levels of the hormone melatonin vary in a daily cycle, thereby allowing the entrainment of the circadian rhythms of several biolo...
    Found op http://en.wikipedia.org/wiki/Melatonin

  3. melatonin
    A hormone derived from serotonin and secreted by pinealocytes in the pineal gland and also by the retinas of vertebrates; it passes by way of the blood or through the fluid of the third ventricle to the anterior pituitary gland to control gonadotropic hormone secretion. Melatonin secretion by the .....
    Found op http://www.daviddarling.info/encyclopedia/M/melatonin.html

  4. melatonin
    melatonin: see pineal gland.
    Found op http://www.infoplease.com/ce6/sci/A0916121.html

  5. melatonin
    Type: Term Pronunciation: mel′ă-tōn′in Definitions: 1. a substance formed by the mammalian pineal gland, which appears to depress gonadal function in mammals and causes contraction of amphibian melanophores; a precursor is serotonin. Melatonin is rapidly metabolized and is take...
    Found op http://www.medilexicon.com/medicaldictionary.php?t=53750

  6. Melatonin
    Melatonin is a hormone produced in the pineal gland, a small gland in the brain, that helps regulate sleep and wake cycles. Very small amounts of melatonin are found in foods such as meats, grains, fruits, and vegetables. Normally, melatonin levels begin to rise in the mid
    Found op http://www.wholisticmedical.co.uk/glossary.php

  7. melatonin
    (mel;ua-to;nin) A hormone secreted by the pineal gland that produces lightening of the skin in lower vertebrates and that may contribute to the regulation of gonadal function in mammals. Secretion follows a circadian rhythm and peaks at night.
    Found op http://www.mhhe.com/biosci/abio/glossary.mhtml

  8. melatonin
    (mel;ua-to;nin) A hormone secreted by the pineal gland that produces lightening of the skin in lower vertebrates and that may contribute to the regulation of gonadal function in mammals. Secretion follows a circadian rhythm and peaks at night.
    Found op http://www.mhhe.com/biosci/abio/glossary.mhtml

  9. melatonin
    A hormone made by the pineal gland (tiny organ near the center of the brain). Melatonin helps control the body
    Found op http://www.cancer.gov/dictionary?expand=M

  10. melatonin
    1) Endocrine 2) Hormone 3) Internal secretion
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/melatonin/1

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