{"id":9516,"date":"2017-02-13T08:00:54","date_gmt":"2017-02-13T07:00:54","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=9516"},"modified":"2017-04-05T22:12:48","modified_gmt":"2017-04-05T20:12:48","slug":"semaine-07-2017","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-07-2017","title":{"rendered":"Semaine 07-2017"},"content":{"rendered":"

Une citation<\/h2>\n

\u00ab\u00a0Chaque coup de col\u00e8re est un coup de vieux, chaque sourire est un coup de jeune.\u00a0\u00bb<\/p>\n

Proverbe chinois<\/p>\n

  <\/p>\n

Une image<\/h2>\n
\"Quels<\/a>
Quels sont ces organes ?<\/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 propos\u00e9e est obtenue \u00e0 partir d’une coupe histologique observ\u00e9e au microscope photonique au grossissement x400.<\/p>\n

Elle pr\u00e9sente des structures allong\u00e9es, orient\u00e9es du coin sup\u00e9rieur gauche au coin inf\u00e9rieur droit, entre lesquelles courent de fins conduits contenant des unit\u00e9s formant des files r\u00e9guli\u00e8res.<\/p>\n

  <\/p>\n

Les structures orient\u00e9es du haut en gauche au bas \u00e0 droite de l’image sont constitu\u00e9es de fibrilles longitudinales et pr\u00e9sentent des stries transversales dispos\u00e9es \u00e0 intervalles r\u00e9guliers. Elles poss\u00e8dent \u00e9galement plusieurs noyaux plats et p\u00e9riph\u00e9riques. Ces caract\u00e9ristiques permettent d’identifier du tissu musculaire stri\u00e9 squelettique<\/a>.<\/p>\n

  <\/p>\n

Les conduits pr\u00e9sents entre les fibres musculaires stri\u00e9es squelettiques sont d\u00e9limit\u00e9s par une paroi tr\u00e8s fine, dans laquelle un noyau plat est visible de loin en loin.
\nLes noyaux appartiennent \u00e0 des cellules \u00e9pith\u00e9liales pavimenteuses agenc\u00e9es en une unique couche. Elles constituent un endoth\u00e9lium<\/a>, seule tunique formant la paroi des tubes.<\/p>\n

La lumi\u00e8re est occup\u00e9e par des structures dispos\u00e9es en files.
\nLa plupart d’entre elles sont d\u00e9pourvues de noyau et correspondent \u00e0 des h\u00e9maties, \u00e9rythrocytes ou globules rouges sans noyau, caract\u00e9ristiques des Mammif\u00e8res.
\nCertaines, rares, poss\u00e8dent un noyau et sont des leucocytes ou globules blancs.<\/p>\n

Les fins conduits sont des vaisseaux sanguins de tr\u00e8s faible diam\u00e8tre, qualifi\u00e9s de capillaires, caract\u00e9ris\u00e9s par la possession d’une paroi r\u00e9duite \u00e0 un endoth\u00e9lium. Ils sont ici pr\u00e9sent\u00e9s en section longitudinale.
\nLocalis\u00e9s \u00e0 l’int\u00e9rieur des organes, ils sont le si\u00e8ge d’\u00e9changes entre le sang et les tissus<\/a> environnants.<\/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

  <\/p>\n

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

Une citation \u00ab\u00a0Chaque coup de col\u00e8re est un coup de vieux, chaque sourire est un coup de jeune.\u00a0\u00bb Proverbe chinois   Une image   Voir l’image de plus grande taille   Voir l’image l\u00e9gend\u00e9e   L’image propos\u00e9e est obtenue \u00e0 partir d’une coupe histologique observ\u00e9e au microscope photonique au grossissement x400. Elle pr\u00e9sente des structures […]<\/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":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[54,14,29,23],"class_list":["post-9516","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-circulation","tag-histologie","tag-mammifere","tag-observation"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t