ruled by a government:D
It typically relates to muscle. It is used in medical terms such as cardiomyopathy.
It is a Latin prefix meaning "father."
c. 1480, the Latin root 'mutare', to change completely/often/unrecognizable Gives us many words about or concerning changes of various kinds; commute, mutate, mutation, mutable, etc.
You emphasize part of it. e.g. Emphasize