Explain The Sliding Filament Theory Of Muscle Contraction

The sliding filament theory is used to explain how muscles contract, this is shown by the 5 stages of the sliding filament theory. When the muscle contracts, the myosin filaments attach themselves to similar actin filaments, this attachment causes formation in chemical bonds this then forms the cross bridges. Myosin and actin molecules are made in a series, this series is what makes up a muscle cell. This basic module is called the sarcomere, these are what gives the tissue of a skeletal muscle its appearance. The mechanism within muscle contraction is known as binding and ratcheting this allows the muscle to shorten and contract. If the specific muscle doesn't need to contract, the strands of proteins that are not needed wrap themselves around
Actin plays an active role in muscular contraction in both smooth and striated muscles it serves as an important structural molecule for the cytoskeleton of many eukaryotic cells, cellular movement and helping the cell to remain in shape.

Myosin:
There are many different types of Myosin each have different characteristics so you are able to identify each of them. They composed of heavy and light chains, they form a family of motor proteins that move along an actin filament it is composed of three components; head domain binds actin filament and ATP, hinge region binds to myosin light chains and functions as the lever arm and tail domain it interacts with other myosin tails or with intracellular cargoes. The joint work of the ATP hydrolysis allows the myosin to produce mechanical force. Myosin is a thick contractile protein that is a motor molecule that works to move the cells in the muscle that contribute to the muscles contracting. It works with the protein actin that combines to create actin filaments. Myosin is a special type of protein that is able to convert adenosine triphosphate (ATP), a molecule that cells use to live and work, into mechanical energy energy that is to generate force and