Otot Rangka Kul Papa Br
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Transcript of Otot Rangka Kul Papa Br
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OTOT RANGKA
STRUKTUR MO
• OTOT : SERAT, FASIKULUS
• SARKOPLASMA : ORGANEL, INKLUS
• ORGANEL : MIOFIBRIL, RETIKULUM S, AG, M
• NUKLEUS : BANYAK, GEPENG, PERIFER, K <
• SERAT ( SEL ) : SARKOLEMA, SARKOPLASMA, NULKEUS, 3
CM, 10 – 100 μm
• BUNGKUS : EPIMISIUM, PERIMISIUM, ENDOMISIUM
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8/17/04 SUBOWO
OTOT SKELET
MIOFIOBRIL
MIOFIOBRA
M. DELTOIDEUS
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MIOFIBRIL
• PITA A : GELAP, 1,5 μ, MIOSIN
• PITA I : TERANG, 1 μ, AKTIN
• PITA H : TERANG, DITENGAH PITA A
• GARIS M : DITENGAH PITA H, GELAP
• PITA H SEMU : DITENGAH PITA H, TERANG
• SARKOMER : SEGMEN DIANTAR 2 Z, 2,5 Μm, 1,5 μm
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STRUKTUR ME
• RETIKULUM S : SARKOTUBUL
• SISTERNA TERMINAL : UJUNG SARKOTUBUL MENYATU
• TUBULUS T : INVAGINASI SARKOLEMA, B, K
• TRIAD : 2 ST + TUBULUS T
• MIOFIBRIL : MIOFILAMEN TEBAL
• PITA A : F. TEBAL + TIPIS
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• PITA I : AKTIN
• PITA H : MIOSIN
• GARIS M : PROTEIN
• PITA H SEMU : JEMBATAN ( - ) FM FA ( HUXLEY )
• KEPALA – KEPALA MI : SPIRAL, 42 nm
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8/17/04 6SUBOWO
SUSUNAN MIOFILAMEN DALAM SARKOMER
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DASAR STRUKTUR HALUS KONTRAKSI• SARKOMER : PENDEWK
• FILAMEN AKTIN : BERGESER KE TENGAH PITA A
• PITA H : MEMENDEK
• PITA I : MEMENDEK
• PITA A : TETAP
• MEKANISME : HIPTESA PERGESERAN FILAMEN
• LEMPENG Z : SALING DEKAT
• MIOFIBRIL : MEMENDEK
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8/17/04 8SUBOWO
MEKANISME KONTRAKSI
PERGESERAN AKTIN TERHADAP MIOSIN
IKATAN