Question 12

(Multiple Choice)

The EK for a cell is -90 mV and ENA is + 55 mV. At a resting membrane potential of -70 mV and assuming conductances ONLY to Na+ and K+,


A) There is an inward K+ curr ent
B) There is an outward Na+ current
C) gNa > gK
D) The Na,K-ATPase pumps Na+ into and K+ ou t of the ce ll
E) The total current across the membrane is zero

Answer