Animal Physiology And Biochemistry, 1. Physiology Of Digestion

1482743-11Physiology of Digestion00Physiology of DigestionIntroduction: All the organisms require energy for various life activities like growth, renewal of body tissues, reproduction etc., Food is the basic need of all the living organisms. The major components of food are carbohydrates, proteins & fats. Vitamins & minerals are also required in small quantities. Food provides the energy required to the body. The chemical constituents of food essential for the body are called nutrients. Most of the food taken by animals or human beings are in the complex form. The body cells can't make use of the complex forms of food directly. The food has to be converted from complex form to simpler form.Digestive System of Man (Gross Anatomy)The human digestive system consists of the Alimentary canal and its associated Digestive glands.I Alimentary Canal : (Digestive tract or gut or gastro intestinal tract). It is an elongated, tubular structure extending from mouth to the anus. It measures about 9 meters in length. Alimentary canal is differentiated the buccal cavity, pharynx, oesophagus, stomach, small intestine and large intestine.1. Buccal Cavity : It begins with the mouth. It is the first part of the alimentary