Energy and Metabolism, Nutrition and Digestive System - Essay Example

The food that we take consists of three major compounds namely Carbohydrates, proteins and lipids. These compounds are further subdivided into many classes such as Carbohydrates into monosaccharides and polysaccharides, Proteins into amino acids and lipids into triglycerides and fatty acids (Saturated and Unsaturated). All these compounds which form the basic requirements of our body and food contribute in the process of formation of ATP, the basic energy providing a compound of our body. These biochemical compounds when entering our digestive system are further broken down into their very basic compound or particle which then undergoes the process of metabolism (either anabolism or catabolism) to form ATP.

Our digestive system consists of oral cavity where food is chewed, esophagus for the transfer of chewed food, stomach for the breaking down and absorption of some of the food specially Vitamin B12 and proteins and intestines (small and large) for the further absorption and digestion of remaining undigested food and removal of leftover undigested food through the anal canal. All these systems form the basis of body’s energy providing system along with liver where most of the absorbed compounds are taken and there they undergo the process of metabolism to form the basic energy providing a compound of the body.

An abnormality in any of them e.g. hepatitis, peptic ulcers could lead to less nutrition supplied to the body ( malnutrition) and even death.