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健康的大腦由數百萬個相互連結的神經細胞組成,稱為神經元。神經元不斷透過像觸手般的連接點傳遞訊號,彼此相互通訊,這些連接點稱為軸突和樹突。 阿茲海默氏症患者的腦部,與正常大腦截然不同。健康大腦中排列整齊、井然有序的神經細胞,變得糾結不清,充滿了老人斑和神經纖維纏結。老人斑和神經纖維纏結,會使負責理智思考的大腦部位,無法執行神經元間的正常活動。 阿茲海默氏症以各種方式影響患者,從發病開始的病程進展緩慢。記憶喪失、意識混亂、失去定向感和判斷力不佳,是阿茲海默氏症的一些症狀。
Duration: 00:54
Published: 2016/2/25
Blausen Medical
Scientific and Medical Animations
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