Struktur, Fungsi, Dan Mekanisme Sistem Pencernaan
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Transcript of Struktur, Fungsi, Dan Mekanisme Sistem Pencernaan
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Struktur, Fungsi, dan Mekanisme Sistem Pencernaan
Alvin Wijaya RustamNIM : 102011239Kelompok D9
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Saluran pencernaanMulut -> pharyng -> oesophagus -> cardia
-> gaster -> pylorum -> duodenum -> yeyunum -> ileum -> caecum -> colon ascenden -> colon transversum -> colon descenden -> colon sigmoideum -> rectum -> anus
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MakroskopikLambung•Fundus•Corpus•Antrum
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Vaskularisasi gaster•A.epiploica sinistra•A.epiploica dextra•A.gastrica sinistra•A.gastrica dextra•A.gastrica brevis
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Lambung•Sel parietal•Chief sel•Sel leher mukosa
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duodenum•Pars superior•Pars ascenden•Pars horizontalis•Pars descenden
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Duodenum•Kelenjar brunner•Vili
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Jejunum•Granula kasarMerah•Plika sirkularisKerkingi
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Ileum•Plaque pyeri
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Jejunum dan Ileum•Aa.jejunales•Aa.ileiTerdapat arcade
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Colon (usus besar)•Caecum•Appendix vermiformis•Colon ascendens•Colon transversum•Colon descendens
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Colon•Taenia coli•Haustra coli•Plica semilunaris
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Colon•Tidak memilikiVili
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Sistem pencernaan•Motilitas•Sekresi•Pencernaan•Penyerapan
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Lambung•Menyimpan makanan yang masuk sampai
disalurkan ke usus halus•Sekresi hcl dan enzim-enzim pencernaan•Mencampur makanan
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Usus Halus•Pergerakan Peristaltik•Pergerakan segmentasi
Pergerakan peristaltik dipengaruhi oleh:•Gastrin, CCK, insulin, serotonin ->
meningkatkan motilitas usus•Sekretin dan glukagon -> menurunkan
motilitas usus
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Usus Besar•Haustrasi•Gerakan massa
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Enzim-Enzim Sistem Pencernaan•Amilase -> amilum menjadi
maltosa•Lipase -> Lemak menjadi
as.lemak•Pepsin -> protein menjadi pepton•Disakaridase -> mengubah disakarida
menjadi monosakarida•Erepsin -> pepton menjadi asam
amino•Kimotripsin -> pepton menjadi asam
amino•Nuklease -> mengubah nukleotida
menjadi nukleosida + gugus posfat
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Terima Kasih