When Eric returned from jogging, he was breathing heavily and sweating profusely, and he complained that his legs ached and felt weak. On the basis of what you have learned about muscle energy metabolism, respond to the following questions:c. What metabolic product(s) might account for his sore muscles and his feeling of muscle weakness?

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?