Muscle Fibre (or muscle fiber, Am.Sp.) is a term that is often used interchangeably with muscle cell.
Above: Simple 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 contract, producing movement or force.
There are three main types of muscle tissue.
- Skeletal Muscle - muscles that move bones, under conscious control.
- Smooth Muscle - surrounding organs and other body structures, not under conscious control.
Muscle fibres are common to all of these.
This section consists of short summaries about the structures that form the muscles of the body. This list is not exhaustive but is intended to be appropriate for students of A-Level Human Biology, ITEC courses in massage and related subjects, and other courses in health sciences. For more general information about muscles see the pages about:
This section is about the
anatomical structures of muscles.
- Anterior Muscles
- Posterior Muscles
- Facial Muscles
- Muscle Terminology (Definitions)
- 1. Structure of Muscle
- 2. Structure of Muscle Cells
- 3. Muscle Filaments
- 4. Sliding Filament Theory
- 5. Neuromuscular Junction
- 6. Actions at Neuromuscular Junction
- Types of Muscle Contractions
- Muscular Disorders
- Effects of exercise on muscles