[問題] 一題生物
想請問各位版上高手
這一題的(B)選項為什麼正確?
小弟一開始的想法是相對細胞內的鈉離子濃度高
所以容易發生神經衝動
請問是哪個地方沒有考慮到的嗎?
http://i.imgur.com/19Jingu.jpg

過幾天就要考試了
祝各位都能考上心目中的校系
加油!!!
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