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CHEMICAL MEDIATION [1 record]

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Record 1 1987-12-09

English

Subject field(s)
  • Biochemistry
  • Pharmacodynamics
DEF

The linking of related functions by a chemical intermediary, especially used of the transmission of nerve impulses between presynaptic and postsynaptic elements.

French

Domaine(s)
  • Biochimie
  • Pharmacodynamie
CONT

Dans la médiation chimique, on peut distinguer plusieurs étapes : la libération dans l'espace synaptique de la substance chimique contenue dans les vésicules des boutons terminaux, qui se fait sous l'action de l'influx nerveux; la reconnaissance et la réception de ce médiateur par la membrane postsynaptique, entraînant une modification de la perméabilité cellulaire à certains ions (sodium, potassium, chlore) et la naissance d'un nouveau potentiel d'action.

Spanish

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