Digestive System: An OverviewAparato Digestivo - Visión General
The Digestive System: An Overview  What is digestion?  Food and
drink must be changed into smaller molecules of nutrients to be
absorbed into the blood and carried to cells throughout the
body. Digestion is the process by which food and liquid are
broken down into smaller parts so that the body can use them to
build and nourish cells, and to provide energy.  How does the
digestive process work?  Digestion involves:    • The mixing of
food.    • The movement of food through the digestive tract.
• A chemical breakdown of large molecules of food into smaller
molecules.  Digestion begins in the mouth, where food and
liquids are taken in, and is completed in the small intestine.
What is included in the digestive system?  The digestive system
is made up of the digestive tract and other organs that aid in
digestion.  The digestive tract is a series of hollow organs
joined in a long, twisting tube from the mouth to the anus,
consisting of the follow