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.
What organs are involved in digestion? Many organs are involved in the digestive process (see the diagram on the left). First, food enters the body via the mouth, where saliva from the salivary gland begins to break down carbohydrates.Next, the food goes down the food tube, the esophagus, pushed by muscular contractions.any organs are involved in the digestive process (see the diagram on the left). First, food enters the body via the mouth, where saliva from the salivary gland begins to break down carbohydrates. Next, the food goes down the food tube, the esophagus, pushed by muscular contractions.