Place a single word into each sentence to make it correct an

Place a single word into each sentence to make it correct, and then arrange the sentences into a logical paragraph order to describe the process of relaxation of a sarcomere.

Solution

Solution:
Tropomyosin moves back into position blocking active sites and no more contractions can occur.

Active transport pumps in the SR move calcium back into the cisternae.

Relaxation begins when nerve signals quit stimulating the synaptic knob from releasing acetylcholine.

Acetylcholine dissociates from its receptor and no new moleciles of acetylcholine are released.

Finally, the muscle fiber returns to its resting length.