Bioniac

            In the previous posts, we have discussed the anatomy of digestive system and the process of digestion. In this post we are going to discuss the process of absorption of digested food and diseases related to digestion. For the previous post (Part-1) click  here  and for the next post (Part-2) click  here . Absorption   of   Digested   Food •Absorption is the process by which the end products of digestion pass through the intestinal mucosa into the blood or lymph.  •It is carried out by passive, active or facilitated transport mechanisms.  •Small amounts of monosaccharides like glucose, amino acids and some electrolytes like chloride ions are generally absorbed by simple diffusion. •The passage of these substances into the blood depends upon the concentration gradients. •However, some substances like glucose and amino acids are absorbed with the help of carrier proteins.  •This mechanism is called the facilitated transport. •Transport of water depends upon the osmotic gradien

           In the previous post, we have discussed the anatomy of digestive system in brief. In this post we are going to discuss the process of digestion. For the previous post click  here . Process of Digestion : •It is completed in mechanical and chemical method.  •The buccal cavity performs two major functions, mastication of food and facilitation of swallowing.  •The teeth and the tongue with the help of saliva masticate and mix up the food thoroughly. •Mucus in saliva helps in lubricating and adhering the masticated food particles into a bolus. •The bolus is then conveyed into the pharynx and then into the oesophagus by swallowing or deglutition.  •The bolus further passes down through the oesophagus by successive waves of muscular contractions called peristalsis .  •The gastro-oesophageal sphincter controls the passage of food into the stomach. •The saliva secreted into the oral cavity contains electrolytes such as Sodiam ion, Potassiam ion, Chloride ion, Bicarbonate ion e

         In this post, we are going to discuss the anatomy of Digestive systems on brief accounts.           Food is one of the basic requirements of all living organisms which provides us with energy and organic materials in order to survive. The major components of our food are carbohydrates, proteins and fats. Vitamins and minerals are also required in small quantities. The water we take in, plays an important role in metabolic processes and also prevents dehydration of the body. Biomacromolecules in food cannot be utilised by our body in their original form. They have to be broken down and converted into simple substances in the digestive system. This process of conversion of complex food substances to simple absorbable forms is called digestion and is carried out by our digestive system by mechanical and biochemical methods. Components of Digestive system :           Our digestive system is consists of mainly two parts named - i) Alimentary Canal                   ii) Associated