Digestion during a proper healthy state takes food through various processes from the moment of biting and chewing in the mouth to the elimination of undigested materials. It breaks down the food into smaller parts (nutrients) that the body quickly absorbs to use as energy and building blocks for the cells.

Almost all cells have numerous molecules on the surface. It includes the red blood cells. The molecules play an essential role in the interaction with immune system’s cells.

A blood transfusion is a transfer of blood or its products to a person bloodstream. It is a usually a maneuver to replace the blood cells and products after a loss through severe bleeding or surgery.

Most of the time nurses deal with gentle and grateful patients. Nevertheless, it will not be a surprise to encounters a difficult patient. The experience of handling complicated patients makes nurses more competent in care giving as they learn how to deal with every kind of person.