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Consider a squid axon bathed in seawater under artificial conditions, and the following ion concentrations: [K]i = 350 mM, [K]o = 10 mM, [Na]in = 55...


9. Consider a squid axon bathed in seawater under artificial conditions, and the following ion concentrations:
[K]i = 350 mM, [K]o = 10 mM, [Na]in = 55 mM, [Na]o = 470 mM.
Predict equilibrium potentials EK and ENa at a temperature of 13oC. Assuming that the Na permeability of the cell
membrane is 1/50 that of the K permeability, predict the resting potential, Em, assuming that Cl is in equilibrium.

10. Adjacent to the neuron is a glial cell, which has no sodium channels in the plasma membrane.
Predict its resting potential, using the ion concentrations provided in Problem 10.

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