BIO 203 Lecture Notes - Lecture 4: Fluid Compartments, Resting Potential, Ion
22 Mar 2017
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Professor malmquist: assume a cell has a membrane potential of -70 mv, and the equilibrium potential for cl- is -81 mv. Assuming that a cell has a membrane potential of -70mv, the equilibrium potential for. Cl- is -81 mv, and that the cell membrane is permeable to cl-, cl- would flow into the intracellular fluid of the cell. At -70 mv, the membrane potential is at rest. At a resting potential, cl- is not at electrochemical equilibrium. In order for cl- to move across the cl- permeable cell membrane, a driving force must be administered to cause cl- to move down its gradient. Since the driving force is positive and cl- is an anion, cl- will move inward. Two such examples are extreme cold temperatures and unceasing pressure.
