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5-hydroxytryptamine Definition from Language, Idioms & Slang Dictionaries & Glossaries
Noun
1. a neurotransmitter involved in e.g. sleep and depression and memory
(synonym) serotonin
(hypernym) monoamine neurotransmitter
5-hydroxytryptamine Definition from Medicine Dictionaries & Glossaries
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 5-hydroxytryptamine in the brain is thought to be a cause of depression. Also called serotonin.
A Service of the National Cancer Institute.
one of the vasoneuroactive substances; it constricts blood vessels, sensitizes or excites nociceptors, and is released from blood platelets.
5-hydroxytryptamine Definition from Encyclopedia Dictionaries & Glossaries
Serotonin or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter. Biochemically derived from tryptophan, serotonin is primarily found in the gastrointestinal (GI) tract, platelets, and in the central nervous system (CNS) of animals including humans. It is popularly thought to be a contributor to feelings of well-being and happiness.
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