{"id":13607,"date":"2021-05-08T11:40:21","date_gmt":"2021-05-08T09:40:21","guid":{"rendered":"https:\/\/codexvirtualis.fr\/codex\/?page_id=13607"},"modified":"2021-08-03T14:11:12","modified_gmt":"2021-08-03T12:11:12","slug":"la-diversite-structurale-et-fonctionnelle-des-epitheliums-digestifs-introduction","status":"publish","type":"page","link":"https:\/\/codexvirtualis.fr\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-structurale-et-fonctionnelle-des-epitheliums-digestifs-introduction","title":{"rendered":"La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs : introduction"},"content":{"rendered":"<header>\n<table style=\"width: 100%; \">\n<tr>\n<th style=\"text-align: center; \" colspan=\"3\">La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs<\/th>\n<\/tr>\n<tr>\n<td style=\"width: 20%; text-align: left; \">\n<a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-des-reins-des-vertebres-bibliographie-et-sitographie\" title=\"La diversit\u00e9 des reins des Vert\u00e9br\u00e9s : bibliographie et sitographie\">Pr\u00e9c\u00e9dent<\/a>\u00a0<\/td>\n<th style=\"width: 60%; text-align: center; \">\u00a0<\/th>\n<td style=\"width: 20%; text-align: right; \">\u00a0<a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-digestion\" title=\"Des \u00e9pith\u00e9liums digestifs responsables de la digestion\">Suivant<\/a>\n<\/td>\n<\/tr>\n<\/table>\n<hr \/>\n<\/header>\n<p> &nbsp; <\/p>\n<section class=\"article\" id=\"d0e3526\">\n<h2 class=\"title\">La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs<\/h2>\n<p><class=\"author\"><br \/>\n<span class=\"firstname\">\u00c9lo\u00efse<\/span> <span class=\"surname\">Arnaud<\/span><br \/>\n<code class=\"email\">&lt;<a class=\"email\" href=\"mailto:eloise.arnaud@etu.univ-st-etienne.fr\">eloise.arnaud@etu.univ-st-etienne.fr<\/a>&gt;<\/code><\/p>\n<p><class=\"author\"><br \/>\n<span class=\"firstname\">Paul<\/span> <span class=\"surname\">Bonneau<\/span><br \/>\n<code class=\"email\">&lt;<a class=\"email\" href=\"mailto:paul.bonneau@etu.univ-st-etienne.fr\">paul.bonneau@etu.univ-st-etienne.fr<\/a>&gt;<\/code><\/p>\n<p><class=\"author\"><br \/>\n<span class=\"firstname\">Rose-Lyne<\/span> <span class=\"surname\">P\u00e9risse<\/span><br \/>\n<code class=\"email\">&lt;<a class=\"email\" href=\"mailto:rose.lyne.perisse@etu.univ-st-etienne.fr\">rose.lyne.perisse@etu.univ-st-etienne.fr<\/a>&gt;<\/code><\/p>\n<p><class=\"author\"><br \/>\n<span class=\"firstname\">Chlo\u00e9<\/span> <span class=\"surname\">Valade<\/span><br \/>\n<code class=\"email\">&lt;<a class=\"email\" href=\"mailto:chloe.valade@etu.univ-st-etienne.fr\">chloe.valade@etu.univ-st-etienne.fr<\/a>&gt;<\/code><\/p>\n<hr \/>\n<p> &nbsp; <\/p>\n<h3>Table des mati\u00e8res<\/h3>\n<ul class=\"toc\">\n<li>\n<span class=\"sect1\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-structurale-et-fonctionnelle-des-epitheliums-digestifs-introduction#d0e3575 \" title=\"La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs : introduction\">Introduction<\/a><\/span>\n<\/li>\n<li><span class=\"sect1\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-digestion\" title=\"Des \u00e9pith\u00e9liums digestifs responsables de la digestion\">Des \u00e9pith\u00e9liums digestifs responsables de la digestion<\/a><\/span>\n<ul>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-digestion#d0e3655\" title=\"Des s\u00e9cr\u00e9tions \u00e9pith\u00e9liales solides contribuant \u00e0 la digestion m\u00e9canique\">Des s\u00e9cr\u00e9tions \u00e9pith\u00e9liales solides contribuant \u00e0 la digestion m\u00e9canique <\/a><\/span>\n<\/li>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-digestion#d0e3698\" title=\"Des s\u00e9cr\u00e9tions \u00e9pith\u00e9liales liquides contribuant \u00e0 la digestion chimique...\">Des s\u00e9cr\u00e9tions \u00e9pith\u00e9liales liquides contribuant \u00e0 la digestion chimique&#8230;<\/a><\/span>\n<\/li>\n<\/ul>\n<\/li>\n<li><span class=\"sect1\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-labsorption\" title=\"Des \u00e9pith\u00e9liums digestifs responsables de l\u2019absorption\">Des \u00e9pith\u00e9liums digestifs  responsables de l\u2019absorption<\/a> <\/span>\n<ul>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-labsorption#d0e3886\" title=\"Des \u00e9pith\u00e9liums de surface importante \u00e0 l'int\u00e9rieur du tube digestif\">Des \u00e9pith\u00e9liums de surface importante \u00e0 l&rsquo;int\u00e9rieur du tube digestif<\/a><\/span>\n<\/li>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-labsorption#d0e3935\" title=\"Des \u00e9pith\u00e9liums de surface importante dans des diverticules du tube digestif\">Des \u00e9pith\u00e9liums de surface importante dans des diverticules du tube digestif<\/a><\/span>\n<\/li>\n<\/ul>\n<\/li>\n<li><span class=\"sect1\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-protection\" title=\"Des \u00e9pith\u00e9liums digestifs responsables de la protection\">Des \u00e9pith\u00e9liums digestifs responsables de la protection<\/a><\/span>\n<ul>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-protection#d0e3993\" title=\"Des \u00e9pith\u00e9liums \u00e9pais assurant une protection m\u00e9canique\">Des \u00e9pith\u00e9liums \u00e9pais assurant une protection m\u00e9canique<\/a><\/span>\n<\/li>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-protection#d0e4036\" title=\"Des \u00e9pith\u00e9liums s\u00e9cr\u00e9teurs assurant une protection chimique\">Des \u00e9pith\u00e9liums s\u00e9cr\u00e9teurs assurant une protection chimique<\/a><\/span>\n<\/li>\n<li><span class=\"sect2\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-protection#d0e4143\" title=\"Des \u00e9pith\u00e9liums assurant une protection immunitaire\">Des \u00e9pith\u00e9liums assurant une protection immunitaire<\/a><\/span>\n<\/li>\n<\/ul>\n<\/li>\n<li><span class=\"sect1\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-structurale-et-fonctionnelle-des-epitheliums-digestifs-conclusion\" title=\"La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs : conclusion\">Conclusion<\/a><\/span>\n<\/li>\n<li><span class=\"bibliography\"><a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-structurale-et-fonctionnelle-des-epitheliums-digestifs-bibliographie-et-sitographie\" title=\"La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs : bibliographie et sitographie\">Bibliographie et sitographie<\/a><\/span>\n<\/li>\n<\/ul>\n<p> &nbsp; <\/p>\n<\/section>\n<section class=\"sect1\" id=\"d0e3575\">\n<h2 class=\"title\" style=\"clear: both\">Introduction<\/h2>\n<p>Les animaux sont des \u00eatres vivants eucaryotes, pluricellulaires, h\u00e9t\u00e9rotrophes pour le carbone et g\u00e9n\u00e9ralement mobiles. Ils pr\u00e9l\u00e8vent dans leur milieu de vie des aliments et du dioxyg\u00e8ne, et y rejettent du dioxyde de carbone et divers d\u00e9chets. Ces \u00e9changes de mati\u00e8re et d&rsquo;\u00e9nergie avec le milieu correspondent aux fonctions d&rsquo;alimentation, d&rsquo;\u00e9changes de gaz respiratoires et d&rsquo;excr\u00e9tion, group\u00e9es en fonctions de nutrition.<br \/>\nElles sont le reflet \u00e0 l&rsquo;\u00e9chelle de l&rsquo;organisme du m\u00e9tabolisme des cellules animales : elles se procurent carbone et \u00e9nergie en d\u00e9gradant des mol\u00e9cules organiques par la voie m\u00e9tabolique de la respiration, consommant du dioxyg\u00e8ne et produisant du dioxyde de carbone, ainsi que divers d\u00e9chets.<\/p>\n<p>La fonction d&rsquo;alimentation consiste le plus souvent en :<\/p>\n<ul class=\"itemizedlist\" style=\"list-style-type: disc; \">\n<li class=\"listitem\">un pr\u00e9l\u00e8vement de particules alimentaires dans le milieu, la prisealimentaire ;\n<\/li>\n<li class=\"listitem\">un traitement m\u00e9canique et chimique des particules alimentaires conduisantrespectivement \u00e0 la r\u00e9duction de leur taille et \u00e0 la simplification des mol\u00e9cules qui les composent, la digestion ;\n<\/li>\n<li class=\"listitem\">un transfert des mol\u00e9cules issues de la digestion dans le milieuint\u00e9rieur, l&rsquo;absorption ;\n<\/li>\n<li class=\"listitem\">un traitement et une \u00e9vacuation des substances non dig\u00e9r\u00e9es.\n<\/li>\n<\/ul>\n<p>Elle est g\u00e9n\u00e9ralement r\u00e9alis\u00e9e par un dispositif anatomique sp\u00e9cialis\u00e9, l&rsquo;appareil digestif.<\/p>\n<p> &nbsp; <\/p>\n<figure id=\"d0e3597\"\nclass=\"img\"\ntitle=\"Figure\u00a01.\u00a0Tube digestif de Criquet en coupe longitudinale (Collection de l\u2019ENS de&#xA; Lyon)\"><\/p>\n<div class=\"figure\">\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/PetitesQuestionsDePhysiologie\/2019\/media\/images\/13_figure_01.jpg\"><img decoding=\"async\" src=\"\/documents\/images\/PetitesQuestionsDePhysiologie\/2019\/media\/images\/13_figure_01.jpg\" width=\"300\" \" alt=\"Tube digestif de Criquet en coupe longitudinale (Collection de l\u2019ENS de Lyon)\" class=\"size-medium\" \/><figcaption class=\"wp-caption-text\">Figure\u00a01.\u00a0Tube digestif de Criquet en coupe longitudinale (Collection de l\u2019ENS de Lyon) <\/a><\/figcaption><\/figure><\/p>\n<div class=\"copyright\">\n<p>Copyright : 2019 &#8211; \u00c9lo\u00efse Arnaud ; Paul Bonneau ; Rose-Lyne P\u00e9risse ; Chlo\u00e9 Valade ; Sandrine Heusser<\/p>\n<\/div>\n<div class=\"legalnotice\" title=\"Note L\u00e9gale\">\n<p> Cette illustration est mise \u00e0 disposition selon les termes de la Licence Creative Commons Attribution &#8211; Pas d&rsquo;Utilisation Commerciale &#8211; Partage dans les m\u00eames conditions 4.0 International.<span class=\"inlinemediaobject\"><br \/>\n<img decoding=\"async\" class=\"ccimage\" src=\"\/documents\/images\/PetitesQuestionsDePhysiologie\/2019\/media\/images\/00_licence.png\" width=\"50\"\/> <\/span> <\/p>\n<\/div>\n<\/div>\n<\/figure>\n<p> &nbsp; <\/p>\n<p>Chez le Criquet, l&rsquo;appareil digestif est form\u00e9 d&rsquo;un tube digestif d\u00e9veloppant des diverticules. Il s&rsquo;agit d&rsquo;un tube creux dans la lumi\u00e8re duquel circulent les aliments.<br \/>\nIl est divis\u00e9 en diverses r\u00e9gions qui sont de l&rsquo;avant vers l&rsquo;arri\u00e8re : le stomod\u00e9um d&rsquo;origine ectodermique, le m\u00e9sent\u00e9ron d&rsquo;origine endodermique et le proctod\u00e9um \u00e9galement d&rsquo;origine ectodermique. Toutes poss\u00e8dent une paroi comportant \u00e0 l&rsquo;interface avec la lumi\u00e8re du tissu \u00e9pith\u00e9lial.<br \/>\nLe tube digestif est associ\u00e9 \u00e0 des glandes salivaires. Produisant un suc d\u00e9vers\u00e9 dans sa lumi\u00e8re, elles sont dites glandes digestives.<\/p>\n<p>Les appareils digestifs des animaux ont de mani\u00e8re g\u00e9n\u00e9rale une organisation voisine de celle d\u00e9crite pour le Criquet.<\/p>\n<p>Le tissu bordant la lumi\u00e8re digestive est donc un \u00e9pith\u00e9lium, form\u00e9 de cellulesjointives reposant sur une membrane basale.<\/p>\n<p> &nbsp; <\/p>\n<p>Quelles sont les caract\u00e9ristiques structurales des \u00e9pith\u00e9liums des appareils digestifs des animaux ? <\/p>\n<p>En relation avec leur structure, quelles fonctions r\u00e9alisent-ils ?<\/p>\n<p>En quoi sont-ils divers ?<\/p>\n<\/section>\n<p> &nbsp; <\/p>\n<footer>\n<hr \/>\n<table style=\"width: 100%; \">\n<tr>\n<td style=\"width: 40%; text-align: left; \">\n<a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/la-diversite-des-reins-des-vertebres-bibliographie-et-sitographie\" title=\"La diversit\u00e9 des reins des Vert\u00e9br\u00e9s : bibliographie et sitographie\">Pr\u00e9c\u00e9dent<\/a>\u00a0<\/td>\n<td style=\"width: 20%; text-align: center; \">\u00a0<\/td>\n<td style=\"width: 40%; text-align: right; \">\u00a0<a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\/des-epitheliums-digestifs-responsables-de-la-digestion\" title=\"Des \u00e9pith\u00e9liums digestifs responsables de la digestion\">Suivant<\/a>\n<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 40%; text-align: left; vertical-align: top; \">Bibliographie et sitographie\u00a0<\/td>\n<td style=\"width: 20%; text-align: center; \">\n<a href=\"\/codex\/petites-questions-de-physiologie\/petites-questions-de-physiologie-animale-2019-ouvrage\" title=\"Petites questions de physiologie animale 2019 : ouvrage\">Sommaire<\/a>\n<\/td>\n<td style=\"width: 40%; text-align: right; vertical-align: top; \">\u00a0Des \u00e9pith\u00e9liums digestifs responsables de la digestion<\/td>\n<\/tr>\n<\/table>\n<\/footer>\n","protected":false},"excerpt":{"rendered":"<p>La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs Pr\u00e9c\u00e9dent\u00a0 \u00a0 \u00a0Suivant &nbsp; La diversit\u00e9 structurale et fonctionnelle des \u00e9pith\u00e9liums digestifs \u00c9lo\u00efse Arnaud &lt;eloise.arnaud@etu.univ-st-etienne.fr&gt; Paul Bonneau &lt;paul.bonneau@etu.univ-st-etienne.fr&gt; Rose-Lyne P\u00e9risse &lt;rose.lyne.perisse@etu.univ-st-etienne.fr&gt; Chlo\u00e9 Valade &lt;chloe.valade@etu.univ-st-etienne.fr&gt; &nbsp; Table des mati\u00e8res Introduction Des \u00e9pith\u00e9liums digestifs responsables de la digestion Des s\u00e9cr\u00e9tions \u00e9pith\u00e9liales solides contribuant \u00e0 la digestion m\u00e9canique Des s\u00e9cr\u00e9tions [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":13169,"menu_order":26,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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