Contraction or relaxation of muscle fibre, due to similar effect in sarcomere
During a muscle contraction when thick and thin filaments slide past each other the muscle fibers perform metabolic activities such as contraction.
Filament
Muscles contract when sarcomeres shorten. The thin and thick filaments that compose sarcomeres do not shorten; instead, they slide past one another, causing the sarcomere to shorten while the filaments remain the same length.
Actin filaments
There is a synonym to "fiber" that is spelled "fibre" that means the exact same thing.Fiber: NounA thread or filament formed from a vegetable tissue, mineral substance, or textile.A substance formed of such threads or filaments.
Actin Filaments
The largest skeletal muscle connective tissues are fascicles, which are bundles of fibers, which are made of myofibrils, which consist of myofilaments.
intermediate filaments
Staple fibre
silk
Fiber (or fibre in English) means a threadlike filament of tissue or textile substance.
Elastic filaments
thread, filament, fiber, string