22.在多發性硬化症 (multiple sclerosis) 中,大腦和脊髓軸突周圍的髓鞘受到損傷,導致脫髓鞘。
這種疾病對動作電位的影響,下列何者最佳?
(I) 動作電位在軸突的相反方向上移動
(II) 動作電位沿著軸突移動得更慢
(III) 不傳遞動作電位
(A) 只有 I
(B) 只有 II
(C) 只有 III
(D) 只有 II 和 III
答案:登入後查看
統計: A(4), B(707), C(65), D(102), E(0) #1814568
統計: A(4), B(707), C(65), D(102), E(0) #1814568
詳解 (共 3 筆)
#3172526
campbell題目照抄
原文題目:
43) In multiple sclerosis, the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. How does this disease manifest at the level of the action potential?
I)Action potentials move in the opposite direction on the axon.
II)Action potentials move more slowly along the axon.
III)No action potentials are transmitted.
A) only I
B) only II
C) only III
D) only II and III
Answer: B
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#5941728
完全不具髓鞘的軸突也不會停止神經訊號傳遞喔!只會變慢而已
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