A 32-year-old man is recovering from third degree burns over 50% of his body surfacearea. His serum potassium level is low (2.9 mEq/L), which is common in healing burnvictims. He exhibits postural hypotension (i.e., blood pressure falls on standing) andskeletal muscle weakness. If the equilibrium potential for K+ in a neuron is -105 mVand the equilibrium potential for Na+ is +55 mV, what would be an approximate valuefor the resting membrane potential for a neuron in this man?A. +22 mVB. +52 mVC. +80 mVD. -25 mVE. -50 mVF. -98 mV
How would this value of the resting membrane potential explain skeletal muscle weakness?