The chemical that transmits the electrical impulse across the neuromuscular junction:

How does the sarcoplasmic reticulum contribute to muscle relaxation?

Which types of neurons are likely to increase muscular activities?

The red pigment in muscle cells (and is responsible for the red color of meat) is ____________

What triggers the sarcoplasmic reticulum to release calcium into the sarcoplasm?

The space between a neuron and a muscle cell is called _________________

The cylindrical organelles/structures found within a muscle cell are called _______________

Which of the following helps end a muscle contraction and begin relaxation?

During the relaxation phase of a muscle twitch:

What is the primary function of the triad in skeletal muscle fibers?