{"id":1118,"date":"2019-05-21T14:48:13","date_gmt":"2019-05-21T12:48:13","guid":{"rendered":"http:\/\/thibault-svt.fr\/?page_id=1118"},"modified":"2025-09-03T13:59:08","modified_gmt":"2025-09-03T11:59:08","slug":"rappels-en-neurologie","status":"publish","type":"page","link":"http:\/\/thibault-svt.fr\/index.php\/terminales\/specialite-2\/tspe-th3-ch1-produire-un-mouvement\/rappels-en-neurologie\/","title":{"rendered":"Rappels en neurologie"},"content":{"rendered":"<p>&nbsp;<\/p>\r\n<p><iframe loading=\"lazy\" title=\"Structure du syst\u00e8me nerveux\" src=\"https:\/\/www.youtube.com\/embed\/NKYsDbUyvpM\" width=\"741\" height=\"556\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\r\n<p style=\"text-align: left;\"><span id=\"rappelsneuro\" style=\"text-decoration: underline; color: #35bd64;\"><strong>Organisation du syst\u00e8me nerveux<\/strong><\/span><\/p>\r\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong>Syst\u00e8me nerveux : <\/strong><\/span><\/span> Ensemble des cellules qui cr\u00e9ent et transmettent un message de nature \u00e9lectrique. Le syst\u00e8me nerveux est form\u00e9 du cerveau, de la moelle \u00e9pini\u00e8re et des nerfs.<\/p>\r\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong> Nerf : <\/strong><\/span><\/span> Ensemble d&rsquo;axones de neurones, entour\u00e9s d&rsquo;une gaine de my\u00e9line. Les nerfs transportent les messages nerveux.<\/p>\r\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong> Neurone : <\/strong><\/span><\/span> Cellule formant le syst\u00e8me nerveux. Ce sont des cellules <strong> excitables <\/strong> c&rsquo;est \u00e0 dire qu&rsquo;elles poss\u00e8dent un <strong> potentiel de repos membranaire<\/strong> permettant de former des messages \u00e9lectriques.<br \/>Les neurones sont form\u00e9s d&rsquo;un corps cellulaire contenant le noyaux et les organites, d&rsquo;un axone, d&rsquo;un bouton synaptique et de dendrites.<\/p>\r\n<div id=\"attachment_3716\" style=\"width: 317px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3716\" class=\" wp-image-3716\" src=\"http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-scaled.jpg\" alt=\"\" width=\"307\" height=\"409\" srcset=\"http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-scaled.jpg 1920w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-225x300.jpg 225w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-768x1024.jpg 768w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-1152x1536.jpg 1152w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-1536x2048.jpg 1536w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-900x1200.jpg 900w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2025\/09\/Schema-dun-neurone-1280x1707.jpg 1280w\" sizes=\"auto, (max-width: 307px) 100vw, 307px\" \/><p id=\"caption-attachment-3716\" class=\"wp-caption-text\">\u00b5c<\/p><\/div>\r\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong> Gaine de my\u00e9line : <\/strong><\/span><\/span> Ensemble de cellules enroul\u00e9es autour des nerfs et isolant le nerf.<\/p>\r\n\r\n<p><span id=\"Moelleepiniere\" style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong> Moelle \u00e9pini\u00e8re : <\/strong><\/span><\/span> Structure compos\u00e9e de neurones, prot\u00e9g\u00e9e par les vert\u00e8bres et allant du cerveau au coccyx. La moelle \u00e9pini\u00e8re conduit les messages nerveux : elle est le point de d\u00e9part des nerfs.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"774\" height=\"268\" class=\"wp-image-1206\" src=\"http:\/\/thibault-svt.fr\/wp-content\/uploads\/2019\/05\/Photo-moelle-epiniere-l\u00e9gend\u00e9e-1.jpg\" alt=\"\" srcset=\"http:\/\/thibault-svt.fr\/wp-content\/uploads\/2019\/05\/Photo-moelle-epiniere-l\u00e9gend\u00e9e-1.jpg 774w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2019\/05\/Photo-moelle-epiniere-l\u00e9gend\u00e9e-1-300x104.jpg 300w, http:\/\/thibault-svt.fr\/wp-content\/uploads\/2019\/05\/Photo-moelle-epiniere-l\u00e9gend\u00e9e-1-768x266.jpg 768w\" sizes=\"auto, (max-width: 774px) 100vw, 774px\" \/>\r\n<figcaption>Photographie de moelle \u00e9pini\u00e8re<\/figcaption>\r\n<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p><span id=\"Orgsens\" style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong> Organe sensoriel : <\/strong><\/span><\/span> Partie du corps recevant un stimulus externe (temp\u00e9rature, pression, \u00e9tirement, odeur &#8230;) et formant un message nerveux qui sera transmis vers les centre nerveux (cerveau ou moelle \u00e9pini\u00e8re)<\/p>\r\n\r\n<p style=\"text-align: left;\"><span id=\"ion\" style=\"text-decoration: underline; color: #35bd64;\"><strong>D\u00e9finitions utiles<\/strong><\/span><\/p>\r\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong>Ion : <\/strong><\/span><\/span> Entit\u00e9 chimique charg\u00e9e \u00e9lectriquement.<\/p>\r\n<p style=\"text-align: center;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">\u2022 <strong>Pompes \u00e0 ion et canaux ioniques: <\/strong><\/span><\/span> Mol\u00e9cule situ\u00e9e dans la membrane d&rsquo;une cellule et pouvant faire passer des ions de l&rsquo;int\u00e9rieur \u00e0 l&rsquo;ext\u00e9rieur de la cellule ou de l&rsquo;ext\u00e9rieur vers l&rsquo;int\u00e9rieur<\/p>","protected":false},"excerpt":{"rendered":"<p>&nbsp; Organisation du syst\u00e8me nerveux \u2022 Syst\u00e8me nerveux : Ensemble des cellules qui cr\u00e9ent et transmettent un message de nature \u00e9lectrique. Le syst\u00e8me nerveux est form\u00e9 du cerveau, de la moelle \u00e9pini\u00e8re et des nerfs. \u2022 Nerf : Ensemble d&rsquo;axones de neurones, entour\u00e9s d&rsquo;une gaine de my\u00e9line. Les nerfs transportent les messages nerveux. \u2022 Neurone [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1753,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"full-width-page-template.php","meta":{"footnotes":""},"class_list":["post-1118","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rappels en neurologie - SVT<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/thibault-svt.fr\/index.php\/terminales\/specialite-2\/tspe-th3-ch1-produire-un-mouvement\/rappels-en-neurologie\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rappels en neurologie - SVT\" \/>\n<meta property=\"og:description\" content=\"&nbsp; Organisation du syst\u00e8me nerveux \u2022 Syst\u00e8me nerveux : Ensemble des cellules qui cr\u00e9ent et transmettent un message de nature \u00e9lectrique. 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