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.
Chemical digestion is the process through which the body of a mammal reduces food to a size where the nutrients that it contains can be absorbed into the bloodstream. The process begins in the mouth, continues in the stomach and ends when the digested particles move through the small intestine for absorption. Proteins in the mouth, stomach and intestine called enzymes are the primary facilitators of chemical digestion. In the mouth, chemical digestion begins when the food enters and encounters saliva and the enzymes that it contains.