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膜电位变化的示意图中，能正确表示神经纤维由静息状态转变为兴奋状态的是（ ）
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高二下学期生物《》真题及答案
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下图
表示某时刻神经纤维膜电位状态，图
表示膜内电位随时间变化曲线，下列相关叙述正确的是( )
A.丁区域的膜电位是Na
＋
外流形成的 B.甲区或丙区一定是刚恢复为静息状态
将图A.神经纤维置于低Na
＋
环境中，静息电位将变小
若图A的兴奋传导方向是从左到右，则乙处电位可能处于③→④过程
下图1是测量神经纤维膜内外电位的装置图2是测得的膜电位变化下列有关叙述错误的是
图1中A.能测出静息电位的大小，相当于图2中A.点的电位
若细胞外Na
+
浓度适当升高，在适宜条件刺激下图2中
点上移 C.神经纤维的状态由A.转变为B.的过程中，膜对钠离子的通透性增大
若要画出如图2的动作电位，需要多个图1装置测量神经纤维不同位点的电位变化
膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
下图是神经细胞的膜电位变化示意图根据下图可判断神经纤维受刺激后可产生
神经反射
神经递质
静息电位
局部电流
能正确表示神经纤维受刺激时刺激点膜电位由静息电位转为动作电位的过程是
①→④
②→③
③→②
④→①
膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
神经细胞在静息时具有静息电位受到适宜刺激时可迅速产生能传导的动作电位这两种电位可通过仪器测量甲乙丙丁
甲和乙
丙和丁
甲和丙
乙和丁
下列能正确表示神经纤维受刺激后刺激点膜电位由兴奋状态恢复为静息状态的过程是
①→④
②→③
③→②
④→①
10.右图是神经细胞的膜电位变化示意图根据该图可判断神经纤维受刺激后产生了
神经反射
神经递质
静息电位
局部电流
下列膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
图1是神经细胞的膜电位变化示意图据图可判断神经纤维受刺激后可产生
神经反射
神经递质
静息电位
局部电流
实验测知某神经纤维在静息时膜电位为－70mv在神经纤维的一端实施刺激膜电位迅速变化由内负外正变成内正
下列膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
下列能正确表示神经纤维受刺激后刺激点膜电位由兴奋状态恢复为静息状态的过程是
①→④
②→③
③→②
④→①
下列能正确表示神经纤维受刺激后刺激点膜电位由兴奋状态恢复为静息状态的过程是
①→④
②→③
③→②
④→①
膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
下列膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
选项A
选项B
选项C
选项D
2.00分膜电位变化的示意图中能正确表示神经纤维由静息状态转变为兴奋状态的是
下图是神经细胞的膜电位变化示意图根据下图可判断神经纤维受刺激后可产生
神经反射
神经递质
静息电位
局部电流
下列膜电位变化的示意图中能正确表示神经纤维由兴奋状态恢复为静息状态的是
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国际法
A.丁区域的膜电位是Na＋外流形成的 B.甲区或丙区一定是刚恢复为静息状态 将图A.神经纤维置于低Na＋环境中，静息电位将变小 若图A的兴奋传导方向是从左到右，则乙处电位可能处于③→④过程
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