a. Digestion is a chemical process. This process is facilitated by special chemicals called digestive enzymes. The end products of digestion are absorbed through the wall of the gut into the blood vessels. These end products are then distributed to body parts that need them for growth, repair, or energy.

b. There are associated glands--the liver and the pancreas--which produce additional enzymes to further the process.

c. Most digestion and absorption takes place in the small intestines.

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