Electrical activity of a nerve is triggered by a depolarization across the membrane and this also causes the atomic number 11 channels to offer and allow sodium ions to flow inward due the electrochemical gradient. Eventually, the membrane potential falls to zero, the sodium channels close, and green channels open allowing potassium ions back in to the cell thus restoring the resting potential. It is this switch over of ions that provided the immediate energy for the extension of a nerve impulse. The experimental technique tha...If you want to touch on a full essay, grade it on our website: OrderEssay.net
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