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Saat kita refleks kena panci panas, sinyalnya lari super cepat ke otak. Tapi pernah terpikir, 'listrik' di sel saraf kita itu aslinya apa? Ini adalah konsep fisiologi paling fundamental di neurologi! đŸ€Ż 'Listrik' di sel saraf kita adalah **Potensial Aksi**, yaitu siklus 3 fase pergerakan ion. Pertama, Fase Istirahat (Polarisasi), di mana Pompa Na+/K+ aktif menjaga luar sel positif dan dalam sel negatif. Kedua, Fase Aksi (Depolarisasi). Saat rangsangan datang, Gerbang Natrium (Na+) terbuka, dan ...
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