lesson 3.4 part 2
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Lesson 3.4 (Part 2) Konsep Homeostasis
Manusia
Disediakan Oleh:NUR SUHAIDAH SUKOR
SMK SANDAKAN, SABAH
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Peranan Ginjal dalam Homeostasis
Osmoregulasi Proses pengawalturan
kandungan air dalam darah. Pengawalaturan isipadu
penghasilan air kencing (ginjal).
Hormon antidiuresis (ADH). ADH dihasilkan di
hipotalamus dan disimpan di kelenjar pituitari.
ADH meningkatkan penyerapan semula air.
Maka tekanan osmosis darah berkurang dan kembali ke paras normal.
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Osmoregulasi – Kandungan Garam dalam Darah
Play Video CD (3): Lesson 39 – Frame 3 (Osmoregulation)
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Kepentingan Ginjal
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Kegagalan Ginjal
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Kegagalan Ginjal
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Hemodialisis
Def: merupakan proses penurasan darah secara artificial bagi mengantikan ginjal yang rosak.
Process: darah daripada arteri pesakit dimasukkan ke mesin yang berfungsi sebagai dialisis (ginjal buatan).
Rawatan: 6 jam, 3x seminggu.
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Hemodialisis
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Hemodialisis
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Transplant:
Def: memindahkan ginjal yang sihat daripada penderma kepada pesakit.
Risiko: badan penerima mungkin akan menolak organ.
Penyelesaian: ubat digunakan untuk mengatasi masalah penolakkan organ.
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Pengawalaturan Aras Gula dalam Darah
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Pengawalaturan Aras Gula dalam Darah
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Aktiviti (1): Mengenalpasti Proses Pengawalaturan
Sila kenal pasti perbezaan mekanisme kawalatur antara gambar A dan B
Rajah A Rajah B
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Regulation of Blood Sugar Level
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Pengawalaturan Suhu Badan
Play Video CD (3): Lesson 39 – Frame 7 (Body Temperature)
Heat is radiated
Blood vessel dialated
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Pengawalaturan Suhu Badan
Bulu roma menegak dan wujudkan ruang vakum (penebat haba). Badan menggeletar dan hasilkan haba. Salur darah mengecut utk kurangkan haba bebas ke persekitaran.
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Aktiviti (2): Homeostasis
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Jawapan (2): Homeostasis