If a blood clot forms, it can stop the blood flow. This can cause a heart attack or stroke. A heart attack occurs when the blood flow to a part of the heart is blocked by a blood clot. If this clot cuts off the blood flow completely, the part of the heart muscle supplied by that artery begins to die.
Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules.
Often the final steps of digestion take place in the villi of enterocytes. These enzymes are almost all hydrolases. The digestion of carbohydrates begins in mouth by the salivary amylase and continues in the small intestine by pancreatic amylase and the intestinal and mucosal oligo-and disaccharidases.he proteolytic enzymes of the pancreas, i.e. trypsin, chymotrypsin and carboxypolipeptidase, which are also secreted in inactive forms, continue protein digestion. The end products of protein digestion are amino acids, produced by the action of intestinal and mucosal dipeptidases.