The two filaments involved are myosin and actin.
Actin: is the framework and slides over the myosin filament when the muscle is shortened.
myosin: is a thick filament
Also a sacromere: is made up of the actin and myosin. It is the functional unit of a muscle fibre and extends from z line to z line.
A muscle contraction: is many sacromeres shortening ( actin sliding over myosin)
Myofilaments Two types: actin (thin filament) & myosin (thick filament)
Bundles of myofilaments make up
Tropomyosin
Muscle fibres contain two myofilaments called actin and myosin
The three different types of myofilaments are thick filaments, thin filaments, and elastic filaments. Thick filaments are composed of myosin protein, thin filaments are primarily made of actin protein, and elastic filaments (also known as titin) provide elasticity and stability to the sarcomere.
Myofilaments are the protein fibers within muscle cells that slide past each other to cause muscle contractions. There are two main types of myofilaments: thin filaments, made up of actin protein, and thick filaments, made up of myosin protein. The interaction between these two types of filaments is essential for muscle contraction.
The myofilaments in a muscle cell are called actin and myosin. Actin and myosin are protein filaments that work together during muscle contraction to generate force and movement.
Myosin
The A band
I-Band
minimal overlap of thin and thick myofilaments.
the myofilaments themselves do not contract, they slide, this is called the Sliding Filament theory, in which the thick filament (Myosin) slides over the thin filament (Actin).