The Resting Membrane Potential for an Isolated Muscle Cell Is

question 151

Multiple Choice

The resting membrane potential for an isolated muscle cell is -70 mV.  Equilibrium potentials for important ions are given below:E_Na = + 60 mV
E_K = - 80 mV
E_Cl = - 70 mV
E_Ca = + 125 mVWhich of the following most likely forms the resting membrane potential of the cell?

• A)High potassium conductance and some sodium conductance
• B)High chloride conductance and some sodium conductance
• C)High calcium conductance and some chloride conductance
• D)High potassium conductance and some chloride conductance
• E)High potassium conductance only

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