The ion necessary for cross–bridging is

What is the role of ATP in the sliding filament theory?

The skeletal system is very important in the process of respiration.

A chronic condition of achy pain, tenderness, and stiff muscles is called

When muscles are not used, they shrink or

An exaggerated lumbar curvature is called

A muscle twitch results when the muscle is stimulated so rapidly that no evidence of relaxation is seen.

The frontal bone connects with the _____ bones

Which type of muscle tissue is striated?

The epidermis