动作电位是指可兴奋细胞受到刺激时在静息电位的基础上产生的可扩布的电位变化过程。动作电位由峰电位（迅速去极化上升支和迅速复极化下降支的总称）和后电位（缓慢的电位变化，包括负后电位和正后电位）组成。峰电位是动作电位的主要组成成分，因此通常意义的动作电位主要指峰电位。动作电位的幅度约为90~130mV，动作电位超过零电位水平约35mV，这一段称为超射。神经纤维的动作电位一般历时约0.5~2.0ms，可沿膜传播，又称神经冲动，即兴奋和神经冲动是动作电位意义相同。
动作电位
网络释义专业释义
... potential market 潜在市场 potential of action 动作电位 potential reason 潜在理性 ...
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...头肌 动作电位 [gap=1244]Key wordsEphedra vulgans fruit polysaccharide; Ventricular papillary muscle; Electric potential ...
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短语
动作电位时程 APD ; action potential duration ; action potention daretion
复合动作电位 [生理] compound action potential ; CMAP ; complex action potential ; compound muscle action potential
双相动作电位 [生理] biphasic action potential
感觉神经动作电位 SNAP ; sensory nerve action potential
单相动作电位 [生理] monophasic action potential ; MAP ; monophasic action potential duration
运动单位动作电位 motor unit action potential ; MUAP ; MUPS
肌肉动作电位 muscle action potential ; MAP
肌肉复合动作电位 CMAP ; compound muscle action potential
新生运动单位动作电位 nascent motor unit action potential
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action potential - 引用次数：261
Besides of those changes mentioned above, the time couse of action potential is also shortened during morphine withdrawal.
除此之外,吗啡短期戒断时,伏核神经元爆发的动作电位的时程缩短。
参考来源 - 吗啡戒断大鼠伏核神经元兴奋性的改变spike - 引用次数：12 参考来源 - 吗啡戒断大鼠伏核神经元兴奋性的改变apd_(90) - 引用次数：5Conclusion:It is the underlying mechanism that Dofetilide blocks the rapidly component of delayed rectifier K+ current-IKr and prolongs the APD_(90)in a Reverse rate-dependent manner.
结论:多非利特特异性阻断延迟性整流钾电流中的快速成分IKr,并逆频率依赖性地延长动作电位时程是其药理作用和副作用的根本机制。
参考来源 - 应用膜片钳技术观察多非利特对豚鼠心室肌电生理特性的作用acdon potentials - 引用次数：1 参考来源 - 异丙酚对兔心室M细胞和外膜层心肌细胞动作电位特性的影响 Effect of propofol on the electrophystological characteristics of the action potential generated by myocardial and epicardial cells in rabbits -
action potential - 引用次数：62
The action potential is " all or none " and stereotyped electricity signal.
动作电位是“全或无”(All or None)的、固定波形的(stereotyped)电信号。
参考来源 - 神经起步点放电峰峰间期的非线性动力学 -
action potential
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双语例句原声例句
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在心脏中，动作电位是在心脏表面从一个心肌细胞向另一个心肌细胞传递。
In the heart, action potential is moving from one heart muscle cell to another over the surface of the heart.
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一般来说，动作电位到达突触节会导致神经递质释放到突触间隙。
In general, action potentials that reach the synaptic knobs cause a neurotransmitter to be released into the synaptic cleft.
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已经确证，心肌收缩始于动作电位使肌膜去极化。
It is well established that the cardial contraction is initiated when an action potential depolarizes the sarcolemma.
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When we measure EKG's, what we're measuring is the activity of all these cells within our heart performing action potentials.
当我们做心电图的时候,我们所测量的是心脏内能发出,动作电位的细胞的活动状态
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Now, in the heart action potential is moving from one heart muscle cell to another over the surface of the heart.
心脏中的动作电位,沿相邻心肌细胞在心脏表面传递
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So essentially, they regulate this action potential, and they do so by helping to establish and then control the voltage gradient within the cells.
总之本质上，它们负责调节动作电位,它们做到这一点通过协助制造,并控制细胞内的电位梯度。
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