klarifikasi topik 1-2 ibd
DESCRIPTION
Topik 1 & 2 IBD (ilmu biomedik dasar)TRANSCRIPT
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Klarifikasi Topik 1-2Fisiologi
Modul IBD 2014-2015
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OUTLINE
• Homeostasis• Komunikasi antar sel• Membran sel• Sistem Reproduksi
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HOMEOSTASIS, KOMUNIKASI ANTAR SEL, MEMBRAN SEL
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Homeostasis
Kemampuan tubuh untuk mempertahankan stabilitas lingkungan dalam melalui sistem kendali yang kompleks organisme berfungsi dan hidup di lingkungan yang sangat bervariasi
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Tingkat Organisasi Tubuh Manusia
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Homeostasis: Lingkungan Dalam
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Integrasi antar Sistem Tubuh
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Homeostasis (“Homeodynamic”)
Postulat Cannon1. Nervous regulation of internal
environment2. Tonic level of activity3. Antagonistic controls4. Chemical signals can have different effects
on different tissues
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Postulat Cannon
1. Sistem saraf berperan mempertahankan “kesesuaian” lingkungan dalam
“kesesuaian” = sesuai fungsi normal sistem saraf mengkoordinasi dan
mengintegrasi volume darah/tekanan, suhu tubuh dan parameter lainnya
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Postulat Cannon
2. Kegiatan pengendalian yang tonik
pengaturan pembuluh darah oleh saraf peningkatan rangsang akan penurunan rangsang akan
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Pengendalian Tonik
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Postulat Cannon
3. Pengendalian antagonistik
sistem saraf simpatis and parasimpatis mempunyai pengaruh berlawanan:
rangsang simpatis frek. jantung rangsang parasimpatis frek. jantung
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Pengendalian Antagonistik
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Pengendalian Antagonistik
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Postulat Cannon
4. Satu zat kimia mempunyai pengaruh berbeda di jaringan yang berbeda
bergantung kepada jenis reseptor di sel sasaran epinefrin pada reseptor /
adrenergik
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Respons bergantung pada Reseptor
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Pengendalian Homeostasis
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Pengendalian Homeostasis: Lengkung Refleks
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Pengendalian Homeostasis: Lengkung Refleks
StimulusReseptor sensorik Jaras aferenPusat (integrasi) Jaras eferen Efektor-sel/jaringan
sasaranRespon Jawaban (lengkung
umpan balik)
RefleksLengkung Umpan Balik
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Umpan Balik
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Umpan Balik
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Komunikasi antar sel
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Komunikasi Antar SelKomunikasi Antar Sel
Kimia
Lokal: Autokrin, Parakrin
Jarak Jauh: Hormon
Listrik
Lokal: Perpindahan ion melalui gap junction
Jarak Jauh: Potensial Aksi
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Komunikasi Langsung
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Komunikasi Tidak Langsung
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Hormon
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Potensial Aksi
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Membran sel
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Membran Sel
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Protein Membran
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Transporter Membran
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Transpor Membran
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Difusi (Sederhana)
Penyebaran molekul secara merata karena pembauran acak menuruni gradien konsentrasi
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Osmosis
Difusi air menuruni gradien konsentrasinya tergantung osmolaritas tekanan osmotik tonisitas
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Tonisitas
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Difusi Terfasilitasi: Kanal
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Difusi Terfasilitasi: Carrier
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Transpor aktif
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Endositosis dan Eksositosis
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Protein Membran
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Protein Membran Struktural: Desmosom
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Protein Membran Struktural: Taut Celah (Gap Junction)
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Protein Membran Struktural: Taut Erat (Tight Junction)
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Protein Membran
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Reseptor Membran
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Reseptor Membran
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SISTEM REPRODUKSI PEREMPUAN
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Proses Oogenesis
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Siklus Ovarium
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Siklus Menstruasi
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Hormon pada Sistem Reproduksi Perempuan
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Siklus Vagina
• Di bawah pengaruh estrogen: sel epitel bertanduk (cornified) ditemukan di apus vagina
• Di bawah pengaruh progesteron: sekresi lendir tebal, proliferasi epitel, infiltrasi leukosit
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Siklus Mammae
• Di bawah pengaruh estrogen: proliferasi duktus mammae
• Di bawah pengaruh progesteron: pertumbuhan lobulus dan alveoli, pembengkakan payudara, nyeri dan sakit 10 hari sebelum menstruasi disebabkan oleh hiperemia dan edema jaringan interstitial payudara. Nyeri hilang saat menstruasi
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TERIMA KASIH