meiosis (spermatogenesis dan oogenesis
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OM SWASTIASTU
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Nama
Kelompok
Ni Kadek Murniningsih (1313041004)
Ni Made Dwi Kusumantini (313041009)
Meli Sulisdiani (313041018)
Nengah Adi Wiryastana (13130426)
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Spermatogenesis and Oogenesis
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Rumusan Masalah1. Bagaimanakah proses spermatogenesis pada laki-laki?
2. Bagaimanakah proses oogenesis pada perempuan?
Tujuan1. Mengetahui proses spermatogenesis pada laki-laki.
2. Mengetahui proses oogenesis pada perempuan.
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Embryologi
MUKADIMAH
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Developmental History of the Leopard Frog, Rana pipiens
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Tahapan, Bagian Sperma, Anilisa Sperma, Hormon yang Berperan
SPERMATOGENESIS
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Spermatogenesis
• proses pembentukan sel spermatozoa yang terjadi di organ kelamin jantan
• tepatnya di tubulus seminiferus.
• merupakan sebuah proses kompleks
• mencakup pematangan sel epitel germinal melalui proses pembelahan dan diferensiasisel
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Tahapan Spermatogenesis
1• Spermatositogenesis
2• Spermiogenesis
3• Spermiasi
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Spermatositogenesis
• merupakan poliferasi spermatogonia menjadi spermatid primer
• spermatogonia diaktifkan oleh sekresi hormontestosterone.
• spermatogoniua membelah secara mitosis untukmenghasilkan dua sel anak
• spermatosit primer bergerak ke dalam lumen tubulus seminiferus
• spermatosit primer menjadi spermatosit skunder
• spermatosit skunder menjadi spermatid
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Spermatositogenesis
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Spermiogenesis
• Fase golgi/pembentukan golgi
• Fase tutup/pembentukan cap akrosom,
• Pembentukan bagian ekor
• Fase Pematangan/Maturasi
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Spermiogenesis
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Peristiwa pelepasan sperma matur dari sel sertoli kelumen tubulus seminiferus
Spermiasi (Spermiation)
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Bagian–bagian Spermatozoa
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Analisa Sperma
• Bau khas, tidak berbau busuk
• Warna putih kelabu
• Volume rata-rata 2.5 – 3.5 ml
• Liquifaksi mengencer setalah 15 menit
• Viskositas normal 3.5 cm
• pH normal 7.2 – 7.8
• Konsentrasi jormal 40 – 200 jt/ml
• Motilasi normal > 40 %
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Hormon yang Berperan
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Kelenjar hipofisis
LH (lutinuezing hormone)
FSH (follicle stimulating hormon)
FSH (follicle stimulating hormon)
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Tahapan, Hormon yang Berperan
OOGENESIS
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• .
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Tahap Meiosis (Sumber: Biology life on Earth, 1999)
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Oogenesis
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Prophase I
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1st Polar body
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Answer
COFEE BREAK!DISCUSS TIME
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OM SANTI SANTI
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