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S miologie Biologique DCEM 1 - PH4 H matologie cellulaire

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S miologie Biologique DCEM 1 - PH4 H matologie cellulaire

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    1. Smiologie Biologique DCEM 1 - PH4 Hmatologie cellulaire Pr. M. Maynadi

    2. Hmatologie : Etude du sang et des organes hmatopotiques Hmatologie cellulaire Immuno Hmatologie (transfusion) Coagulation Hmostase

    3. sang : lments figurs (cellules) et plasma. srum = plasma dfibrin, recueilli sur un tube sec sans anticoagulant. trois lignes cellulaires, issues de la moelle osseuse : Ligne rouge : globules rouges ou hmaties ou rythrocytes Ligne blanche : globules blancs ou leucocytes Ligne plaquettaire hmogramme (numration sanguine) : tude quantitative Formule Leucocytaire sanguine : proportions relatives de chaque catgorie de leucocytes.

    4. I Les globules rouges 1 Gnralits Cellule anucle, provient du rticulocyte, Transport de l'oxygne et du gaz carbonique (l'hmoglobine) Ncessite du fer, des folates (ou vitamine B9) et de la vitamine B12 pour sa maturation.

    5. 2 Dfinitions des constantes globulaires L'hmatocrite (Ht) : la rpartition plasma-globules rouges dans le sang. Ex : un Ht 45 % signifie que dans 100 ml de sang, le plasma reprsente 55 ml. Les globules rouges reprsentent 45 ml. C'est donc un volume

    6. Volume globulaire moyen (VGM) : Concentration corpusculaire moyenne en hmoglobine (CCMH) :

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