{"id":61509,"date":"2019-05-27T10:57:29","date_gmt":"2019-05-27T08:57:29","guid":{"rendered":"https:\/\/test.steinmuehle.de\/blog\/2019\/05\/27\/naunt-les-eleves-de-cm2-etudient-le-processus-de-la-respiration-a-laide-dun-modele\/"},"modified":"2019-05-27T10:57:29","modified_gmt":"2019-05-27T08:57:29","slug":"naunt-les-eleves-de-cm2-etudient-le-processus-de-la-respiration-a-laide-dun-modele","status":"publish","type":"post","link":"https:\/\/steinmuehle.de\/fr\/blog\/2019\/05\/27\/naunt-les-eleves-de-cm2-etudient-le-processus-de-la-respiration-a-laide-dun-modele\/","title":{"rendered":"NaUnt : Les \u00e9l\u00e8ves de CM2 \u00e9tudient le processus de la respiration \u00e0 l&rsquo;aide d&rsquo;un mod\u00e8le"},"content":{"rendered":"<p>Comment fonctionne la respiration chez l&rsquo;\u00eatre humain ? Et comment les poissons parviennent-ils \u00e0 vivre sous l&rsquo;eau sans s&rsquo;\u00e9touffer ? C&rsquo;est ce qu&rsquo;ont appris les \u00e9l\u00e8ves de CM2 dans le cadre de NaUnt, le cours de sciences dispens\u00e9 par Heike Rabben-Martin, professeure de biologie. Lenja Kissling, de la classe 5b, a r\u00e9dig\u00e9 un texte expliquant comment le groupe a abord\u00e9 ce sujet :   <\/p>\n<p>\u00ab Au d\u00e9but, nous avons construit \u00e0 NaUnt un mod\u00e8le simple illustrant la respiration humaine, que l&rsquo;on distingue bien sur la photo. Nous, les \u00eatres qui respirons par les poumons, inspirons de l\u2019air dans nos poumons. L\u2019air ambiant ne contient que 21 % d\u2019oxyg\u00e8ne. Nos poumons sont toutefois capables d\u2019absorber cet oxyg\u00e8ne pr\u00e9sent dans l\u2019air et de le transf\u00e9rer dans notre circulation sanguine.   <\/p>\n<p>Lors de l&rsquo;inspiration, les poumons se remplissent d&rsquo;air, puis se vident lors de l&rsquo;expiration. Le diaphragme se contracte lors de l&rsquo;inspiration et se rel\u00e2che lors de l&rsquo;expiration. Lors de l&rsquo;inspiration, l&rsquo;air riche en oxyg\u00e8ne est aspir\u00e9 par la bouche ou le nez, puis achemin\u00e9 vers les poumons par la trach\u00e9e ; l&rsquo;air appauvri en oxyg\u00e8ne quitte notre corps par le m\u00eame chemin.  <\/p>\n<p>On a ensuite \u00e9tudi\u00e9 la respiration des poissons et d\u00e9couvert comment ceux-ci parviennent \u00e0 vivre sous l&rsquo;eau sans s&rsquo;\u00e9touffer.<\/p>\n<p>En cours, nous avons appris que les branchies sont l&rsquo;organe essentiel dont se servent les poissons pour respirer. Les poissons ouvrent la bouche, ce qui permet \u00e0 l&rsquo;eau d&rsquo;y p\u00e9n\u00e9trer. Lorsqu&rsquo;ils referment ensuite la bouche, l&rsquo;eau ressort par les branchies. Les branchies ont pour fonction d\u2019absorber l\u2019oxyg\u00e8ne dissous dans l\u2019eau ; l\u2019eau qui ressort ensuite des branchies est donc moins riche en oxyg\u00e8ne.   <\/p>\n<p>\u00ab Afin de mieux comprendre la structure et le fonctionnement des branchies, nous avons fabriqu\u00e9 en classe un mod\u00e8le de branchies de poisson, tel qu&rsquo;il appara\u00eet sur la photo. \u00bb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17927\" src=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-scaled.jpg\" alt=\"\" width=\"1535\" height=\"2126\" srcset=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-scaled.jpg 1083w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-217x300.jpg 217w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-744x1030.jpg 744w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-768x1064.jpg 768w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-1109x1536.jpg 1109w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-1479x2048.jpg 1479w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-509x705.jpg 509w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-17x24.jpg 17w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-26x36.jpg 26w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6494-35x48.jpg 35w\" sizes=\"auto, (max-width: 1535px) 100vw, 1535px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17926\" src=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-scaled.jpg\" alt=\"\" width=\"1535\" height=\"2126\" srcset=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-scaled.jpg 1083w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-217x300.jpg 217w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-744x1030.jpg 744w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-768x1064.jpg 768w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-1109x1536.jpg 1109w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-1479x2048.jpg 1479w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-509x705.jpg 509w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-17x24.jpg 17w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-26x36.jpg 26w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6489-35x48.jpg 35w\" sizes=\"auto, (max-width: 1535px) 100vw, 1535px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17925\" src=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-scaled.jpg\" alt=\"\" width=\"2126\" height=\"1535\" srcset=\"https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-scaled.jpg 1500w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-300x217.jpg 300w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-1030x744.jpg 1030w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-768x555.jpg 768w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-1536x1109.jpg 1536w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-2048x1479.jpg 2048w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-705x509.jpg 705w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-24x17.jpg 24w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-36x26.jpg 36w, https:\/\/steinmuehle.de\/wp-content\/uploads\/sites\/5\/2019\/05\/MG_6486-48x35.jpg 48w\" sizes=\"auto, (max-width: 2126px) 100vw, 2126px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comment fonctionne la respiration chez l&rsquo;\u00eatre humain ? Et comment les poissons parviennent-ils \u00e0 vivre sous l&rsquo;eau sans s&rsquo;\u00e9touffer ? C&rsquo;est ce qu&rsquo;ont appris les \u00e9l\u00e8ves de CM2 dans le cadre de NaUnt, le cours de sciences dispens\u00e9 par Heike Rabben-Martin, professeure de biologie. Lenja Kissling, de la classe 5b, a r\u00e9dig\u00e9 un texte expliquant [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":61513,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"give_campaign_id":0,"footnotes":""},"categories":[147,201],"tags":[],"class_list":["post-61509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-mint"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NaUnt : Les \u00e9l\u00e8ves de CM2 \u00e9tudient le processus de la respiration \u00e0 l&#039;aide d&#039;un mod\u00e8le - Steinm\u00fchle \u2013 Schule &amp; Internat<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/steinmuehle.de\/fr\/blog\/2019\/05\/27\/naunt-les-eleves-de-cm2-etudient-le-processus-de-la-respiration-a-laide-dun-modele\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NaUnt : Les \u00e9l\u00e8ves de CM2 \u00e9tudient le processus de la respiration \u00e0 l&#039;aide d&#039;un mod\u00e8le\" \/>\n<meta property=\"og:description\" content=\"Comment fonctionne la respiration chez l&rsquo;\u00eatre humain ? Et comment les poissons parviennent-ils \u00e0 vivre sous l&rsquo;eau sans s&rsquo;\u00e9touffer ? C&rsquo;est ce qu&rsquo;ont appris les \u00e9l\u00e8ves de CM2 dans le cadre de NaUnt, le cours de sciences dispens\u00e9 par Heike Rabben-Martin, professeure de biologie. 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Et comment les poissons parviennent-ils \u00e0 vivre sous l&rsquo;eau sans s&rsquo;\u00e9touffer ? C&rsquo;est ce qu&rsquo;ont appris les \u00e9l\u00e8ves de CM2 dans le cadre de NaUnt, le cours de sciences dispens\u00e9 par Heike Rabben-Martin, professeure de biologie. 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