Nernst equation RT Lionlo In zF [ionl for a monovalent cation at 37oC lion]o [ion) E-61.5 log Nernst

Nernst equation RT Lionlo In zF [ionl for a monovalent cation at 37oC lion]o [ion) E-61.5 log Nernst Equation, substituted (20ºC) R: gas constant (8.314472 J · K-1 · mol-1) T: absolute temperature Z: valence (electrical charge of permeant ion) F: Faraday constant (amount of electrical charge contained in a mole of a univalent ion (96,485.3383(83) coulomb/mole) 1a. Use the Nernst equation to calculate the equilibrium membrane potential for potassium (K+) ions if the concentration outside the cell is 20mM and the concentration inside the cell is 300mM. 1b. Use the Nernst equation to calculate the equilibrium membrane potential for calcium (Ca++) ions if the concentration outside the cell is 2 mM and the concentration inside is 0.2 mM. 1c. Use the Nernst equation to calculate the equilibrium membrane potential for chloride (Cl-) ions if the concentration outside the cell is 50mM and the concentration inside is 2mM. 1d. If the resting membrane potential is -60mV, given the above concentrations of ions, which way (in or out of the cell) will potassium want to move 2. Draw a graph which shows the 4 important phases of the action potential, be sure to include appropriate axes and units. What happens to ion movements across the membrane during each phase?