In people with FMD, the dysplasia involves the walls of one or more arteries in the body. Areas of narrowing, called stenosis, may occur as a result of abnormal cell development. If enough narrowing causes a decrease in blood flow through the artery, symptoms may result.
  Digestion begins in the mouth. Mechanical digestion begins with the chewing of food. Chemical digestion also begins in the mouth with the enzymes been produced and used â¦ to break down the food. 4 people found this useful.he main parts of the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, liver, gull bladder, and pancreas. Food does not actually pass thro â¦ ugh the liver, gull bladder and pancreas, but they do produce a green liquid called bile that helps digestion.
Digestion of carbohydrate begins in the mouth, with the secretion of the enzyme salivary amylase from the serous cells of the salivary gland. This enzyme breaks starch and glycogen into disaccharides.echanical digestion occurs in the mouth by the mixing and churning of food and the release of mucus to lubricate the food. The food containing fats essentially follow the same pathway as carbohydrate foods, with chemical digestion primarily beginning in the stomach. No chemical digestion of. lipids.