Vitamin B12 helps the body make healthy red blood cells and helps keep nerve cells healthy. It is found in animal foods, including meat, fish, eggs, milk, and other dairy products. The most common cause of pernicious anemia is the loss of stomach cells that make intrinsic factor. Intrinsic factor helps the body absorb vitamin B12 in the intestine. The loss of parietal cells may be due to destruction by the body's own immune system.
The family system. According to Bowen, a family is a system in which each member had a role to play and rules to respect. Members of the system are expected to respond to each other in a certain way according to their role, which is determined by relationship agreements.
nuclear family a family consisting of a two-generation relationship of parents and children, living together and more or less isolated from their extended family. nuclear dyad family a husband and wife with no children. family of origin the family in which a person grew up. family processes the psychosocial, physiological, and spiritual functions and relationships within the family unit; for nursing diagnoses, see under process. single-parent family a lone parent and offspring living together as a family unit. skewed family a family in which one spouse is severely dysfunctional and the other spouse assumes an acquiescent, peacemaking stance to maintain equilibrium.