Download - Hemostasis
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DEBBY SHERLY AMANDA121.0211.035
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HEMOSTASIS
![Page 3: Hemostasis](https://reader036.vdokumen.com/reader036/viewer/2022082409/563dbaf6550346aa9aa91572/html5/thumbnails/3.jpg)
DEFINISI• Mekanisme tubuh menghentikan pendarahan
secara spontan• Mempertahankan keenceran darah -> darah
tetap mengalir dalam pembuluh darah -> menutup kerusakan pemb.darah -> mengurangi kehilangan darah
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FAKTOR YANG TERLIBAT
• Sistem vaskuler• Sistem Trombosit• Sistem koagulasi• Sistem Fibrinolisis
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MEMERLUKAN 3 LANGKAH
• Hemostasis Primer• Hemostasis sekunder• Fibrinolisis
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TROMBOSIT
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DEFINISI
• Benda kecil bergranula membentuk agregat di tempat cidera
• Ga punya nukleus• Tidak bisa bereproduksi• 2-4 mikro meter• Jumlah 150.000 - 300.000 / mikroliter• Waktu paruh : 4 hari (gan) 8-12 hari (guy)
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Struktur
• Sitoplasma :• - aktin, miosin, trombosistein• - sisa RE, aparatus Golgi, sejumlah Ca• - mitokondria : sintetis ATP dan ADP• - Prostaglandin : R(X) pemb darah• - fak stabilisasi Fibrin
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• Membran sel :• - ada reseptor : Kolagen, ADP, Von willebrand• - lapisan :• ~ glikoprotein• ~ fosfolipid
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MEKANISME UMUM HEMOSTASIS
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KELIK AKUUU