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The main idea of the Systems Model is that our body has these natural lines of defense to deal with everyday stressors and a line of resistance to stressors that have made it through.
Open system: A system in which there is always a flow of input and process, output and feedback.
The central core is made up of basic survival factors. These factors include the system variables, genetic features, and strengths and weaknesses of the system parts.
Neuman views patients holistically, and consideres the variables that each patient could have.
First Line of Defense
Second Line of Defense
Line of Resistance: protection is activated when stressors have penetrated the normal line of defense, causing a reaction symptomatology.
Strengths and Weaknesses
Weakness
Weakness
The biggest weakness of this theory is lack of clarification. There are certain terms that could be more differentiated so there is less confusion.
For example: