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Das Verdauungssystem

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Zusammenfassung

Das menschliche Verdauungssystem besteht aus der Mundhöhle mit Zunge und Zähnen, der Speiseröhre (Ösophagus), dem Magen, Dünndarm (Duodenum, Jejunum und Ileum), dem Dickdarm (Kolon) und Enddarm (Rektum). Es handelt sich dabei um ein durchgehendes Hohlraumsystem vom Mund zum After, in dem die wesentlichen Funktionen stattfinden: Zerkleinerung von Nahrung, ihr Transport, Speicherung (Magen, Dickdarm), die biochemische Aufspaltung der Nahrungsbestandteile, die Abtötung von aufgenommenen Bakterien und die Absorption der niedermolekularen Nahrungsbestandteile. Außerdem werden Wasser und Mineralien im Dünndarm sowohl aufgenommen wie abgegeben; Flüssigkeitsresorption und vor allem bakterielle Verarbeitung der Nahrungsreste (u. a. Vitamin-K-Produktion) finden im Dickdarm statt.

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Authors and Affiliations

  1. Institut für Zellbiologie, Biochemie und Biotechnologie, Universität Bremen, Leobener Straße NW2, 28359, Bremen, Deutschland

    Ludger Rensing

  2. Zentrum für Humangenetik, Universität Bremen, Leobener Str. ZHG, 28359, Bremen, Deutschland

    Volkhard Rippe

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  1. Ludger Rensing
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  2. Volkhard Rippe
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Correspondence to Ludger Rensing .

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Rensing, L., Rippe, V. (2014). Das Verdauungssystem. In: Altern. Springer Spektrum, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-37733-4_8

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