1. During an Action potential, Na+ enters the cell and causesthe membrane voltage to become less negative. This process iscalled______________.
2. During Resting Membrane Potential of a cell, Na+ is moreconcentrated __________ whereas K+ is more concentrated____________.
3. At the beginning of Repolarization, ______ channels close and______ channels open.
4. What is the name of the muscle fiber organelle that iscontinuous with the sarcolemma and transmits an action potentialthrough the inside of a cell?
5. Name the neurotransmitter that creates an action potential onthe Motor End Plate of a muscle fiber.
