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 muscular system also provides structure for our body and works with the skeletal system to allow us to move. There are three types of muscle: cardiac muscle, which is found in the heart, skeletal muscle, which is involved in conscious movement, and smooth muscle, which is found in organs we do not consciously control, such as the stomach.