A Threshold Potential Is

question 25

Multiple Choice

A threshold potential is

• A) the potential achieved when two opposing forces acting upon an ion (concentration and electrical gradients) achieve a state of equilibrium
• B) the peak potential achieved during an action potential
• C) the point at which there is an explosive increase in Na⁺ or Ca²⁺ permeability
• D) the potential at which K⁺ permeability increases
• E) always a positive potential

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