Published sources used are referenced.
Cultures change constantly.
Different members of a society internalize and express different parts of their culture. At the institutional level, it can be viewed as those systems of care that acknowledge the importance of culture, assess cross-cultural relations, are alert to cultural differences and their repercussions and adapt services to meet cultural needs. Ethnicity is the active expression of culture. An ethnic group is a large group in which members self-identify. They internalize and share a heritage of, and commitment to, unique social characteristics, cultural symbols, and behavior patterns that are not fully understood or shared by outsiders.