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.
Together with the skeletal system, the muscular system forms the musculoskeletal system, which is mainly responsible for the movement of the body. The human body has over 650 muscles that have varying roles, including movement, posture, balance, strength, heat generation, digestion and respiration.