![\"Quel](\"\/documents\/images\/histologie_articles\/ovaire\/lombric_cs_anterieure_ovaire_02-WEB.jpg\")
<\/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 10-2019 r\u00e9sulte de l’observation d’une coupe histologique \u00e0 l’objectif x10 du microscope photonique.<\/p>\n Elle comporte une structure ovo\u00efde et volumineuse en haut \u00e0 gauche et une structure \u00e9paisse et ondul\u00e9e en bas \u00e0 droite. <\/p>\n Dans les espaces semblant vides, de petites unit\u00e9s polymorphes sont pr\u00e9sentes. Elles contiennent de petites sous-unit\u00e9s ovales. Il s’agit vraisemblablement de <\/a>cellules<\/a> animales et de leurs noyaux, libres dans une cavit\u00e9 liquidienne.<\/p>\n Une telle organisation sugg\u00e8re que le corps de l’animal ayant servi \u00e0 confectionner la coupe est constitu\u00e9 de segments, s\u00e9par\u00e9s par des cloisons et contenant des cavit\u00e9s liquidiennes.<\/p>\n Les cloisons sont constitu\u00e9es de deux fins filets continus entourant une masse fibreuse peu \u00e9paisse, et dans la cloison de droite, une large r\u00e9gion centrale form\u00e9e de fibres transversales entrecrois\u00e9es.<\/p>\n De tels segments correspondent \u00e0 des m\u00e9tam\u00e8res<\/a>, comprenant chacun une cavit\u00e9 c\u0153lomique<\/a> dans laquelle des c\u0153lomocytes libres sont pr\u00e9sents. Ils sont isol\u00e9s par des diss\u00e9piments<\/a> comprenant au contact du liquide c\u0153lomique un \u00e9pith\u00e9lium<\/a> c\u0153lomique, simple et pavimenteux, surmontant du tissu conjonctif<\/a> fibreux et \u00e0 droite des fibres musculaires lisses. Cet agencement corporel est caract\u00e9ristique du groupe des Ann\u00e9lides<\/a>, vers annel\u00e9s, repr\u00e9sent\u00e9s notamment par le Lombric. <\/p>\n <\/p>\n La structure massive de gauche est d\u00e9limit\u00e9e par un liser\u00e9 continu et contient de nombreuses cellules circulaires, de dimensions diverses. Elles poss\u00e8dent des noyaux de tailles vari\u00e9es et un cytoplasme h\u00e9t\u00e9rog\u00e8ne. La structure ondul\u00e9e de droite appara\u00eet form\u00e9e de cellules hautes, jointives et organis\u00e9es en une unique couche. Elles pr\u00e9sentent une bordure apicale filamenteuse. Elles constituent un \u00e9pith\u00e9lium simple, prismatique et cili\u00e9<\/a>. L’ovaire et le pavillon de l’oviducte sont localis\u00e9s dans le segment 13 et l’orifice g\u00e9nital femelle dans le segment 14.<\/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>Gorgees N. S. and Khalid V. A., 2017 – Histomorphology of the ovaries of the earthworm, Dendrobaena atheca<\/em> Cernosvitov (Annelida, Clitellata: Oligochaeta)<\/a>. Journal of Morphological Science, 34, 3 : 178-185 (adresse : https:\/\/www.thieme-connect.de\/products\/ejournals\/abstract\/10.4322\/jms.117817) • <\/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 • <\/span>Siekierska E., 2003 – The structure of the ovary and oogenesis in the earthworm, Dendrobaena veneta<\/em> (Annelida, Clitellata)<\/a>. Tissue & Cell, 35 : 252\u2013259 <\/p>\n Une citation \u00ab\u00a0La bonne \u00e9ducation consiste \u00e0 cacher tout le bien que nous pensons de nous-m\u00eames et le peu de bien que nous pensons des autres.\u00a0\u00bb M. Twain Une image Voir l’image de plus grande taille Voir l’image l\u00e9gend\u00e9e L’image de la semaine 10-2019 r\u00e9sulte de l’observation d’une coupe histologique \u00e0 […]<\/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-11847","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\/11847","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=11847"}],"version-history":[{"count":11,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/11847\/revisions"}],"predecessor-version":[{"id":11861,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/11847\/revisions\/11861"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=11847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=11847"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=11847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nToutes deux sont entour\u00e9es d’espaces semblant vides et d\u00e9limit\u00e9s par des cloisons transversales, fine \u00e0 gauche et \u00e9paisse \u00e0 droite, contenant chacune une masse circulaire homog\u00e8ne intens\u00e9ment color\u00e9e.<\/p>\n
\nLes diss\u00e9piments sont parcourus de vaisseaux sanguins se pr\u00e9sentant comme des masses circulaires, homog\u00e8nes et intens\u00e9ment color\u00e9es.<\/p>\n
\nIl s’agit vraisemblablement d’un ovaire, gonade<\/a> femelle assurant la formation des ovules<\/a>, gam\u00e8tes<\/a> femelles.<\/p>\n
\nAccol\u00e9 au diss\u00e9piment, il semble se poursuivre le long d’une structure tubuleuse traversant la cloison.
\nIl repr\u00e9sente le pavillon cili\u00e9 de l’oviducte au niveau duquel les ovules sont pris en charge avant d’\u00eatre achemin\u00e9s vers l’orifice g\u00e9nital<\/a> femelle.<\/p>\n
\nDOI : 10.4322\/jms.117817<\/a><\/p>\n
\nDOI : 10.1016\/S0040-8166(03)00038-7<\/a><\/p>\n
\n","protected":false},"excerpt":{"rendered":"