depolarization in A Sentence

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    If the Depolarization is small(say,

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    However, if the Depolarization is large enough,

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    Action potentials result from the Depolarization of the cell membrane(the sarcolemma),

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    It is believed that when Depolarization travels down the underside of the brain, nerves that

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    The fundamental difference from animal action potentials is that the Depolarization in plant cells is not accomplished

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    in front, not having been activated recently, is capable of being stimulated by the Depolarization from the action potential.

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    have fast sodium channels like neurons, and the Depolarization is mainly caused by a slow influx of calcium ions.

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    It is believed that when Depolarization travels down the underside of the brain, nerves that sense pain in the head and neck are triggered.

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    9

    The SA and AV node do not have fast sodium channels like neurons, and the Depolarization is mainly caused by a slow influx of calcium ions.

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    10

    A sufficiently strong Depolarization(increase in Vm) causes the voltage-sensitive sodium channels to open; the increasing permeability to sodium drives Vm closer to the sodium equilibrium voltage ENa≈ +55 mV.

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    11

    The fundamental difference from animal action potentials is that the Depolarization in plant cells is not accomplished by an uptake of positive sodium ions, but by release of negative chloride ions.

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    12

    If the Depolarization is small(say, increasing Vm from -70 mV to -60 mV), the outward potassium current overwhelms the inward sodium current and the membrane repolarizes back to its normal resting potential around -70 mV.

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    13

    However, if the Depolarization is large enough, the inward sodium current increases more than the outward potassium current and a runaway condition(positive feedback) results: the more inward current there is, the more Vm increases, which in turn further increases the inward current.

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