Systems in the body interact to carry out life functions. The muscles of the body are part of the muscular system. Which system provides the impulses that cause the muscles to contract?

Lightning would be your answer

This is first hand knowledge, top-level athletes, successful business people and achievers in all fields all  set goals. setting  goals  gives you long-term vision and short-term motivation . it focuses your acquisition of knowledge, and you to organize your time and your resources so that you can make the very most of your life.

Asmall appetite is not a typical cause of anorexia nervosa. what is typical is low self esteem, a desire to others and lack of mood regulating chemicals.