Dependent Patient
Sit the patient fully upright or in an elevated side-lying position to prevent aspiration during mouth cleaning.
Inspect the patient's mouth: ...
Remove loose material or debris (especially important if patient is NPO/Nothing by Mouth): ...
Brush the teeth with toothpaste.
The answer is body's line of defense. The first line of defense which includes physical as well as chemical barriers would defend the body from infection. It would include the tears, cilia, stomach acid,urine, white blood cells,mucus and the skin. The skin is the largest organ and would act as a barrier from pathogens. If first line of defense won't work the second line will then be activated.
Prior Knowlege sometimes referred to schemata..or the ability to bring to mind knowledge that you have previously learned. This is also called a mental image of things.