Filament(s)
There are two types of muscle filaments.
They are called
Together, these two types of protein filaments form cylindrical structures called myofibrils.
The thin filaments and the thick filaments within the myofibrils overlap in defined patterns that form units called sarcomeres.
Above: Diagram of the unit within a muscle cell that is known as a sarcomere.
Above: Diagram of the unit within a muscle cell that is known as a sarcomere.
For more about muscle filaments see the structures of muscle filaments.
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
