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.
Eventually they are delivered to cells where they can be used. Digestion takes place in the digestive tract or gastrointestinal tract, starting at the mouth and ending at the anus, including the esophagus, stomach, duodenum, jejunum, ileum, ascending, transverse and descending colons and the rectum.Organs closely associated with the GI tract are the liver and the pancreas.ventually they are delivered to cells where they can be used. Digestion takes place in the digestive tract or gastrointestinal tract, starting at the mouth and ending at the anus, including the esophagus, stomach, duodenum, jejunum, ileum, ascending, transverse and descending colons and the rectum.