Muscle Fibre is a term that is often used interchangeably
with "Muscle Cell".
Muscle fibres are multinucleate (have many nuclei - see diagram below),
and many myofibrils. There
are hundreds of myofibrils in each muscle fibre.
Above: Diagram of the Structure of a Muscle Fibre.
Muscle fibres are the basic functional units of muscle
tissue - which is special because it has the ability to contact, producing
movement or force. There are three types of muscle, which are
muscle, and cardiac
muscle. Muscle fibres are
common to all of these.