The cellular determinants of K+ secretion in the principal cell include the intracellular K+ concentration, the luminal K+ concentration, the potential (voltage) difference across the luminal membrane, and the permeability of the luminal membrane for K+.
The average cost for a brake pad replacement, resurface rotors is between $254 to $361. Labor costs are estimated between $182 to $231 while parts are priced between $72 to $130.
Resurfacing the rotors is a quick-fix and cost-effective method to let your vehicleâs brakes function efficiently. When the brake pads are substituted for new ones, the rotors must be always measured to check if they still have adequate metal left to perform safe braking. On average, the cost may vary depending on location, the mechanic/repair shop and kind of vehicle. 2  Most people pay anywhere from $250 to $375. 3  Each rotor can cost $30 to $55 each, depending on the mechanic.