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2014 | OriginalPaper | Hoofdstuk

2. Vorming en secretie van speeksel

Auteurs : E.C.I. Veerman, A.J.M. Ligtenberg

Gepubliceerd in: Speeksel en speekselklieren

Uitgeverij: Bohn Stafleu van Loghum

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Samenvatting

  • Speeksel wordt geproduceerd door verschillende speekselklieren. Daarnaast bevat mondvloeistof een kleine hoeveelheid serumeiwitten, die via de creviculaire vloeistof in de mondvloeistof terechtkomen.
  • De grootste bijdragen aan speeksel leveren de oorspeekselklieren (gl. parotise), de onderkaakspeekselklieren (gl. submandibulares) en de speekselklieren onder de tong (gl. sublinguales).
  • Anorganische bestanddelen variëren sterk, afhankelijk van stimulatie; vooral Na+, K+, Cl- en HCO3 -. Minder sterk variëren Ca2+, Mg2+ en fosfaat.
  • De ionensamenstelling van primair speeksel lijkt op die van bloedplasma: door resorptie in het afvoerkanaal worden Na+- en HCO3 --ionen geresorbeerd en K+-ionen gesecreteerd. Gevolg van deze resorptieprocessen is dat de mondvloeistof hypotoon is ten opzichte van serum.
  • Speekselsecretie is een neuronaal gereguleerd proces. Secretie van eiwit door acinaire cellen wordt gestimuleerd door adrenerge stimuli. Cholinerge stimuli zetten cellen aan tot secretie van water en ionen.
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Metagegevens
Titel
Vorming en secretie van speeksel
Auteurs
E.C.I. Veerman
A.J.M. Ligtenberg
Copyright
2014
Uitgeverij
Bohn Stafleu van Loghum
DOI
https://doi.org/10.1007/978-90-368-0387-8_2