What sarcomere characteristic affects the amount of tension produced when a skeletal muscle fiber contracts?

Intercalated discs and striations suggest:

In order for a peripheral nerve fiber to regenerate it must have:

Which muscle tissue contracts due to voluntary control?

Antagonistic muscle groups:

Identify the muscles labeled 4. 

What type of tissue forms tendons?

The arbor vitae [tree of life] refers to: 

Explain the function of sodium-potassium ion pumps.

The loudness of a sound is correlated with the ___ of the sound wave.