單項(xiàng)選擇題

神經(jīng)細(xì)胞在接受一次閾上刺激后，興奮性的周期變化是()

A．相對(duì)不應(yīng)期→絕對(duì)不應(yīng)期→超常期→低常期
B．絕對(duì)不應(yīng)期→相對(duì)不應(yīng)期→低常期→超常期
C．絕對(duì)不應(yīng)期→低常期→相對(duì)不應(yīng)期→超常期
D．絕對(duì)不應(yīng)期→相對(duì)不應(yīng)期→超常期→低常期
E．絕對(duì)不應(yīng)期→超常期→低常期→相對(duì)不應(yīng)期

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