Question

Explain the mechanism of muscle contraction with a diagram.

Answer 1

Mechanism of muscle contraction:

1. The sliding filament concept is the most widely time-venerated motive for muscle contraction.
2. Muscle contractions, in keeping with this viewpoint, are part of a chemical interest cycle.

Sliding filament concept:

1. Actin is a highly abundant intracellular protein found in all eukaryotic cells that play an important role in muscle contraction and cell movement.
2. Actin is also required for the maintenance and control of cell shape and architecture.
3. Myosin is a prototypical molecular motor—a protein that converts chemical energy in the form of ATP into mechanical energy, resulting in force and movement.
4. Cross-bridges extending from myosin filaments carry out the operation.
5. Sarcomeres are contractile muscle units.
6. A sarcomere is a striated muscular functional unit.
7. This indicates that it is the most fundamental unit of our skeletal muscle.
8. Actin filaments connect with the Z disc at the sarcomere's terminal.
9. Sarcomeres shorten and muscular tissues agree at the same time as the sliding filament pulls the Z disc deeper.
10. A sarcomere is made from numerous parallel filaments referred to as actin filaments (skinny filaments) and myosin filaments (thick filaments).
11. The sliding filament concept explains how muscle tissue agrees for the duration of the body.
12. Tiny actin filaments are constantly pulled throughout large myosin filaments to provide anxiety in a muscle.
13. When an impulse reaches the neuromuscular junction, the sarcoplasmic reticulum is activated, inflicting calcium ions to be released.
14. These calcium ions then bind to troponin, displacing tropomyosin from the actin's myosin binding site.