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.
Social constructionism or the social construction of reality (also social concept) is a theory of knowledge in sociology and communication theory that examines the development of jointly constructed understandings of the world.ocial constructionism or the social construction of reality (also social concept) is a theory of knowledge in sociology and communication theory that examines the development of jointly constructed understandings of the world.