Complete the following sentences regarding excitation-contra…
Complete the following sentences regarding excitation-contraction coupling 1. When an action potential arrives at the axon terminal enters through voltage-setive channels. 2. This triggers the release of from the axon terminal. 3. This diffuses from the axon terminal to the of the skeletal muscle fiber. 4. It then binds to on the motor endplate membrane, increasing their permeability to Na+ and K+ 5. More moves into the fiber at the motor endplate than moves out, depolarizing the membrane and producing a . K