{"id":11179,"date":"2018-07-09T08:00:54","date_gmt":"2018-07-09T06:00:54","guid":{"rendered":"https:\/\/codexvirtualis.fr\/codex\/?p=11179"},"modified":"2018-07-03T21:41:11","modified_gmt":"2018-07-03T19:41:11","slug":"semaine-28-2018","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-28-2018","title":{"rendered":"Semaine 28-2018"},"content":{"rendered":"

Une citation<\/h2>\n

\u00ab\u00a0Poser une question qui ne se pose pas est la plus s\u00fbre fa\u00e7on de prouver qu’elle se pose.\u00a0\u00bb<\/p>\n

F. Mitterrand<\/p>\n

  <\/p>\n

Une image<\/h2>\n
\"Quel
Quel est cet organe ?<\/figcaption><\/figure>\n

  <\/p>\n

Voir l’image de plus grande taille<\/a><\/p>\n

  <\/p>\n

Voir l’image l\u00e9gend\u00e9e<\/a><\/p>\n

  <\/p>\n

L’image de la semaine 28-2018 provient de l’observation d’une coupe histologique \u00e0 l’objectif x40 du microscope photonique.<\/p>\n

Elle comporte une lumi\u00e8re situ\u00e9e en bas \u00e0 droite, entour\u00e9e d’une paroi form\u00e9e de deux r\u00e9gions.
\nAu contact de la lumi\u00e8re, une tunique uniforme et dense est pr\u00e9sente, surmont\u00e9e d’une fine bordure stri\u00e9e.
\nElle repose sur une tunique l\u00e2che, comportant des structures fibreuses d’orientations diverses.
\nIl pourrait s’agir d’un organe tubuleux coup\u00e9 transversalement, longitudinalement ou obliquement.<\/p>\n

  <\/p>\n

La tunique au contact de la lumi\u00e8re est constitu\u00e9e de sous-unit\u00e9s accol\u00e9es, ne m\u00e9nageant pas d’espace entre elles.
\nElles sont allong\u00e9es et contiennent des structures ovales, \u00e9galement allong\u00e9es dans le m\u00eame sens. Elles sont r\u00e9parties en une unique couche.
\nCet agencement est caract\u00e9ristique d’un <\/a>\u00e9pith\u00e9lium<\/a> simple et prismatique dont l’apex<\/a> est repr\u00e9sent\u00e9 par une ciliature<\/a> et dont les cellules contiennent un noyau allong\u00e9 perpendiculairement au plan de l’\u00e9pith\u00e9lium.<\/p>\n

  <\/p>\n

Tout autour de l’\u00e9pith\u00e9lium, des structures fibreuses de diff\u00e9rentes orientations sont pr\u00e9sentes. Elles contiennent chacune une sous-unit\u00e9 oblongue et ponctu\u00e9e correspondant \u00e0 un noyau, entour\u00e9e d’un espace homog\u00e8ne.
\nCe sont des fibres musculaires lisses, circulaires, longitudinales ou obliques par rapport \u00e0 l’organe.
\nQuelques cellules dispers\u00e9es et de fines fibres leur sont associ\u00e9es, repr\u00e9sentant du tissu conjonctif<\/a> fibreux comprenant quelques vaisseaux sanguins.<\/p>\n

  <\/p>\n

Cette organisation sugg\u00e8re que le contenu de la lumi\u00e8re de l’organe est d\u00e9plac\u00e9, \u00e0 la fois par les battements ciliaires et les contractions musculaires.<\/p>\n

La coupe a \u00e9t\u00e9 confectionn\u00e9e dans un tube digestif d’Ann\u00e9lide<\/a> oligoch\u00e8te, en l’occurrence du Lombric ou Ver de terre. Il s’agit d’une section de pharynx, dont l’organisation g\u00e9n\u00e9rale est d\u00e9crite dans l’article de la semaine 27-2018<\/a> de Codex virtualis.<\/p>\n

  <\/p>\n

Pour en savoir plus, consulter :<\/p>\n

• <\/span>les pages Premiers pas histologiques<\/a> de Codex virtualis (adresse : http:\/\/codexvirtualis.fr\/codex\/de-lorganisation-interne\/premiers-pas-histologiques)<\/p>\n

• <\/span> Burkitt H.G., Young B., Heath J.W., 1993 \u2013 Histologie fonctionnelle Wheater. Arnette, 408p. Paris<\/p>\n

• <\/span>Heusser S., Dupuy H.G., 2015 \u2013 Atlas biologie animale. Dunod, 220p. Paris<\/p>\n

• <\/span>Leake L. D., 1975 \u2013 Comparative histology, an introduction to the microscopic structure of animals. Academic press, 738p. London, New York, San Francisco<\/p>\n

  <\/p>\n

\n","protected":false},"excerpt":{"rendered":"

Une citation \u00ab\u00a0Poser une question qui ne se pose pas est la plus s\u00fbre fa\u00e7on de prouver qu’elle se pose.\u00a0\u00bb F. Mitterrand   Une image   Voir l’image de plus grande taille   Voir l’image l\u00e9gend\u00e9e   L’image de la semaine 28-2018 provient de l’observation d’une coupe histologique \u00e0 l’objectif x40 du microscope photonique. Elle […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[47,14,23,22],"class_list":["post-11179","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-annelide","tag-histologie","tag-observation","tag-physiologie"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/11179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/comments?post=11179"}],"version-history":[{"count":11,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/11179\/revisions"}],"predecessor-version":[{"id":11215,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/11179\/revisions\/11215"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=11179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=11179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=11179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}