What is the Richter Scale. The Richter magnitude scale (often shortened to Richter scale) is the most common standard of measurement for earthquakes. It was invented in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes.
Like most systems in the body, the muscular system does not work in isolation. The most obvious systems that interact with muscular system are the skeletal system, the nervous system and the circulatory system. Muscles are also involved in the digestive system, the respiratory system and the immune system.
The skeletal and muscular systems work together to produce movement and maintain posture. Muscles attach at various points on the bones and work to change the bones' orientation relative to one another at the joints. Stress placed on the skeletal system by the muscular system influences its growth and development. Exercise causes the skeletal system to become denser and stronger.