The term "Ka" is a concept in ancient Egyptian belief that represents an individual's life force or soul. It was believed to be a part of every person and accompanied them throughout their lifetime, from birth until death. The Ka was said to reside in the body and could only be protected by the proper rituals, amulets, and magical formulas. In ancient Egyptian art, the symbol for "Ka" is depicted as a human form with outstretched wings, representing both protection and divine presence.