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.
  Digestion starts in the mouth by the enzymes produced by the salivary glands, and the food then goes to the stomach where the gastric, pancreatic juice, and bile and intestinal juice all help to break and digest the food, which then passes down the intestine to get absorbed and get in the body to provide energy.igestion needs the help of two more systems in the body to provide energy from food. Energy is made from oxygen and glucose, when reacted together. Oxygen enters the body via the respiratory system and glucose enters through the digestive system. These two sys â¦ tems link as they both provide the formulae for energy.