Write a 7 pages paper on optimum nutrition and digestive wellness. The ability of the intestine to digest, not only gastric peptides but also intact proteins, makes possible the nutrition of people wi

Write a 7 pages paper on optimum nutrition and digestive wellness. The ability of the intestine to digest, not only gastric peptides but also intact proteins, makes possible the nutrition of people with achylia gastrica and even of persons who have had the stomach completely removed. The soluble digestive products then diffuse into the bacterial cell and are used. Protozoa usually sweep food particles and water into their bodies, at a fixed or a changed position. and these food vacuoles constitute temporary "stomachs" in which the digestion proceeds. Metazoa has permanent digestive organs, most elaborate in the mammals. Man's digestive system, or alimentary canal, is a continuous passage through the body, from mouth to anus, with special extensions into accessory secreting organs (glands) (Lipski, 2004).

2. Whenever an organism consumes food in the solid state, this must be brought into solution before it can be utilized. It is necessary, therefore, that such solid food is digested. In some organisms, digestion may occur outside of the body, and this may constitute an important adaptation for those animals which are in the habit of eating animals larger than themselves (Lipski, 2004). Ordinarily, however, food is taken into the body and digested there. Digestion may occur in cavities of special organs such as the stomach or intestine, or it may occur within the protoplasm of cells. The latter type of digestion obviously takes place in protozoa. In organisms such as paramecium or ameba, the ingested food is enclosed in a food vacuole, which serves the same purpose as the stomach or intestine of a complicated metazoan. Within the food vacuole, the solid food particle is brought into solution. It must not be thought, however, that intracellular digestion is confined to protozoa. Moreover, in some animals rather higher on the evolutionary scale, there is also a certain amount of intracellular digestion (Holford 2005).