Problem: What factors contribute to the -70mV resting membrane potential? (select all that apply)A. Na+ leak channels allow Na+ to leak in.B. Cl- enters the cell making the inside very negative.C. K+ leak channels allow K+ to enter the cell down its concentration gradient.D. Na+/K+ pump generates a high concentration of K+ on the outside of the cell, making the inside more negative.

FREE Expert Solution

For a resting neuron, the resting membrane potential is between -60 and -80 mV. Thus, it is estimated to be around -70 mV. Ions of potassium and sodium play significant roles in this resting potential. The sodium-potassium pump uses energy to actively transport Na+ out of the cell and K+ into the cell. This leads to a high concentration of Na+ outside the cell.

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Problem Details

What factors contribute to the -70mV resting membrane potential? (select all that apply)

A. Na+ leak channels allow Na+ to leak in.

B. Cl- enters the cell making the inside very negative.

C. K+ leak channels allow K+ to enter the cell down its concentration gradient.

D. Na+/K+ pump generates a high concentration of K+ on the outside of the cell, making the inside more negative.

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