Ce résumé contient les informations de base et des photos microscopiques pour chacun des tissus du cœur, des vaisseaux sanguins et lymphatiques qui vous permettront de réussir l'examen et d'acquérir un bon bagage des connaissances
ce dernier est préparé par des médecins et des maître a...
, Apparition des ébauches vasculaires « les îlots de Wolff et
Pander »:
Au cours de la 3ème sem du développement embryologique,
apparaissent les ébauches vasculaires au niveau du mésenchyme extra
embryonnaire:
• de la splanchnopleure, autour du lécithocèle;
• de la sphère choriale, sous le trophoblaste;
• du pédicule embryonnaire
Dans chaque îlot, les cellules périphériques s’allongent et forment
ensemble l’ébauche des parois des vaisseaux, tandis que les cellules
centrales s’arrondissent et se transforment en cellules souches des
lignées sanguines.
, splanchnopleure
Sphère choriale
Pédicule embryonnaire
Ilots de Wolf
et Pander
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