The musculoskeletal system is the combination of the muscular and skeletal systems working together and includes the bones, muscles, tendons and ligaments of the body.he musculoskeletal system is the combination of the muscular and skeletal systems working together and includes the bones, muscles, tendons and ligaments of the body.
A social identity is the portion of an individual's self-concept derived from perceived membership in a relevant social group.s originally formulated by Henri Tajfel and John Turner in the 1970s and the 1980s, social identity theory introduced the concept of a social identity as a way in which to explain intergroup behaviour.
What is Social Presence Theory 1. A communication theory that proposes a one-dimensional continuum of social presence, which reflects the degree of awareness of the other person in a communication interaction. Learn more in: Evolving Gender Communication Issues in E-Collaboration.