6. The Muscular System

True or False: if false, choose the answer that best corrects the statement.

The events of excitation-contraction coupling involve converting the electrochemical signal to the mechanical movement of contraction.

During an action potential, the phase where ___________ moves into the cell results in depolarization while the phase where ______________ exits the cell results in repolarization. 

What is the role of the calcium ion in the signaling of an action potential at the neuromuscular junction?

True or false: if false, choose the answer that best corrects the statement:

The motor neuron is in contact with the sarcolemma in order to efficiently pass the electrical signal to the muscle fiber.