muscular system

I am struggling to understand this poorly worded question for my access to midwifery course. 

c) Explain the structure of striated (skeletal muscle) and compare the muscle structure in areas of the body that move frequently to those that move less frequently.

d) Use the sliding muscle filament theory to explain the molecular mechanisms behind muscle contraction in these types of muscles. You may use diagrams to help you if you wish.

Preferably as close to 150 words as possible (these questions are part of a 500 word limit).