Under which of these circumstances does an action potential develop? A)when threshold voltage is reached B)when voltage-gated K⁺ channels open and the membrane reaches about -40 millivolts C) when spatial and/or temporal summation of graded potentials are cancelled D) when Cl^- enters the cell

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The Answer of Under which of these circumstances does an action potential develop? A)when threshold voltage is reached B)when voltage-gated K⁺ channels open and the membrane reaches about -40 millivolts C) when spatial and/or temporal summation of graded potentials are cancelled D) when Cl^- enters the cell

Under Which of These Circumstances Does an Action Potential Develop