Resting membrane potential of muscle fibre is: (A) -60mv, (B) -70mv, (C) -80mv, (D) -90mv
Answer is D. The resting membrane potential of skeletal muscle is about –90 mV. The action potential lasts 2 to 4 ms and is conducted along the muscle fiber at about 5 m/s.
Ganong 23 rd ed, pg 96