{"id":18939,"date":"2017-09-27T09:00:50","date_gmt":"2017-09-27T07:00:50","guid":{"rendered":"https:\/\/hellocare.com\/?p=18939"},"modified":"2025-12-05T10:10:14","modified_gmt":"2025-12-05T09:10:14","slug":"placenta-organe-mere-foetus","status":"publish","type":"post","link":"https:\/\/www.hellocare.com\/blog\/placenta-organe-mere-foetus\/","title":{"rendered":"Placenta : Organe au centre du lien entre la m\u00e8re et son f\u0153tus"},"content":{"rendered":"

Par Martine Robert, Sage-Femme<\/em><\/p>\n<\/div>

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U<\/span>ne grossesse annonc\u00e9e \u00e9voque en nous, au-del\u00e0 des \u00e9motions ressenties, la volont\u00e9 de mener \u00e0 terme et en bonne sant\u00e9 le futur b\u00e9b\u00e9 \u00e0 na\u00eetre. Impatients de savoir que l\u2019\u0153uf est bien implant\u00e9, que la grossesse est \u00e9volutive, que le petit c\u0153ur bat et que m\u00eame dans sa forme la plus embryologique, un soup\u00e7on de f\u0153tus est visible, presque un b\u00e9b\u00e9 se voit , nous nous int\u00e9ressons tr\u00e8s peu \u00e0 \u00ab comment, gr\u00e2ce \u00e0 quoi et \u00e0 qui \u00bb tout cela est possible : nous nommerons ici et l\u00e0 le placenta !<\/span><\/span><\/p>\n<\/div>

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\"femme<\/span><\/div>
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La barri\u00e8re f\u0153to-maternelle<\/h2><\/h2><\/div>
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De son implantation au terme de la grossesse<\/h3>\n

Dans les tout premiers jours de la grossesse, l\u2019\u0153uf poursuivant son chemin de la trompe o\u00f9 il \u00e9t\u00e9 f\u00e9cond\u00e9 jusqu\u2019\u00e0 l\u2019ut\u00e9rus, vit sur les r\u00e9serves assur\u00e9es dans l\u2019ovule. Puis, se cramponnant \u00e0 la muqueuse, c\u2019est d\u00e8s la fin du premier mois qu\u2019une entit\u00e9 \u00e0 part enti\u00e8re, le placenta, reli\u00e9 \u00e0 l\u2019embryon par le cordon prendra le relais pour assurer\u00a0circulation, respiration, protection et nutrition du b\u00e9b\u00e9.<\/b><\/p>\n

Au fur et \u00e0 mesure des semaines, ses possibilit\u00e9s et sa maturit\u00e9 prendront de plus en plus d\u2019importance, \u00e9voluant en fonction de l\u2019\u00e2ge de la grossesse, d\u00e9finissant alors que la grossesse est \u00e0 son terme.<\/p>\n<\/div>\n<\/div>\n<\/div>

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Telle une usine<\/span><\/span><\/h3>\n
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Ce sont des centaines de vaisseaux, venant \u00e0 la fois de la maman et du b\u00e9b\u00e9 qui le constituent pour finir par se regrouper au niveau du cordon ombilical et apporter au f\u0153tus tout ce dont il a besoin, alors m\u00eame qu\u2019il n\u2019y a aucun \u00e9change direct entre eux, ni de m\u00e9lange entre leur sang respectif.<\/p>\n

Il remplace les fonctions des organes immatures du f\u0153tus (poumons, reins, intestins)<\/p>\n

Il va r\u00e9guler les \u00e9changes, son r\u00f4le essentiel se situant dans l\u2019ordre du vital\u00a0: oxyg\u00e9nation (de vrais poumons tout neufs) et nutrition (un frigidaire dans lequel il va trouver tout ce dont il a besoin). Le placenta, organe donc capital de la grossesse\u00a0!<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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Et en profondeur<\/span><\/span><\/h3>\n
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Les \u00e9changes<\/i><\/b>\u2026gazeux par les vaisseaux maternels qui apportent l\u2019oxyg\u00e8ne au f\u0153tus que ce dernier rejette en gaz carbonique, mais aussi \u00e9changes de min\u00e9raux et de vitamines.<\/p>\n

Lieu de passage<\/i><\/b>\u2026des nutriments, \u00e9l\u00e9ment de base de la nourriture, les glucides et les lipides passent ais\u00e9ment la\u00a0barri\u00e8re<\/b>\u00a0placentaire. Les autres nutriments sont transform\u00e9s par des enzymes placentaires pour en permettre le passage. Le placenta est susceptible de\u00a0filtrer 3 litres d\u2019eau par heure en fin de grossesse\u00a0!<\/b><\/p>\n

Protection<\/i><\/b>\u2026les anticorps maternels passent la barri\u00e8re placentaire et le prot\u00e8gent\u00a0mais\u00a0<\/b>certains\u00a0m\u00e9dicaments, certains toxiques, les virus la franchissent.\u00a0Le b\u00e9b\u00e9 n\u2019est donc pas prot\u00e9g\u00e9 de tout.<\/b><\/p>\n

S\u00e9cr\u00e9tion..<\/i><\/b>.de l\u2019hormone qui permet de d\u00e9tecter la grossesse (b\u00e9ta HCG) qui va s\u00e9cr\u00e9ter celles qui vont assurer la poursuite de la grossesse (\u0153strog\u00e8nes et progest\u00e9rone) \u00e0 celle qui assurera sa nutrition pendant la grossesse (hormone placentaire lactog\u00e8ne) et qui prendra le relai dans la production de lait maternel. On comprend ais\u00e9ment combien il est pr\u00e9cieux \u00e0 nos futurs b\u00e9b\u00e9s\u2026<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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> Pour levez le doute sur votre \u00e9tat de sant\u00e9, parlez \u00e0 un m\u00e9decin sans rdv<\/a><\/em><\/p>\n<\/div>

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Les conseils de la sage-femme<\/h2><\/h2><\/div>
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\"M\u00e9decin<\/span><\/div>

\u00ab\u00a0Manger pour deux\u00a0\u00bb? Non !<\/span><\/span><\/h3>\n
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Au-del\u00e0 de la prise de poids engendr\u00e9e chez la maman, susceptible de d\u00e9clencher certaines pathologies de la grossesse (diab\u00e8te gestationnel, hypertension), c\u2019est un b\u00e9b\u00e9 \u00ab\u00a0bien potel\u00e9\u00a0\u00bb que nous pourrions avoir \u00e0 terme, pouvant alors poser la question d\u2019une d\u00e9cision \u00e0 prendre pour le faire na\u00eetre plus t\u00f4t.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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\u00ab\u00a0Manger sain\u00a0\u00bb ? Oui !<\/span><\/span><\/h3>\n
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Des repas \u00e9quilibr\u00e9s, avec tout ce qui est autoris\u00e9 tenant compte de son immunit\u00e9 au niveau de la toxoplasmose entre autre..<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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\u00a0\u00bb Bien respirer.. et se reposer \u00ab\u00a0<\/span><\/span><\/h3>\n
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Ambiance non tabagique fortement conseill\u00e9e, les \u00e9changes seront favoris\u00e9s par une vie calme et saine, pour avoir \u00e0 terme \u00ab\u00a0un beau b\u00e9b\u00e9\u00a0\u00bb<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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\u00ab\u00a0Rigueur de mise\u00a0\u00bb<\/span><\/span><\/h3>\n
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Z\u00e9ro alcool, vaccins \u00e0 jour (Rub\u00e9ole, notamment la coqueluche pour vous-m\u00eame et votre entourage) contr\u00f4le des prises m\u00e9dicamenteuses (avec votre m\u00e9decin)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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Ne jamais oublier ce lien intime qui nous lie \u00e0 notre b\u00e9b\u00e9<\/span><\/span><\/h3>\n
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\u00c7a commence in ut\u00e9ro\u00a0et tr\u00e8s t\u00f4t, donnant un sens \u00e0 l\u2019\u00e9quilibre m\u00eame psychique du f\u0153tus.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>

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\"consulter<\/a><\/span><\/div>
<\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"

ne grossesse annonc\u00e9e \u00e9voque en nous, au-del\u00e0 des \u00e9motions ressenties, la volont\u00e9 de mener \u00e0 terme et en<\/p>\n","protected":false},"author":28,"featured_media":24058,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[575],"tags":[],"class_list":["post-18939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante-generale-medecine"],"acf":[],"yoast_head":"\nPlacenta : Organe au centre du lien entre la m\u00e8re et son f\u0153tus<\/title>\n<meta name=\"description\" content=\"Une grossesse annonc\u00e9e \u00e9voque en nous, au-del\u00e0 des \u00e9motions ressenties, la volont\u00e9 de la mener \u00e0 terme.Retrouvez le r\u00f4le du Placenta dans ce lien m\u00e8re-f\u0153tus\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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