Answer: Digestion is the process by which the body breaks down food into smaller molecules that can be absorbed and used for energy. This process begins in the mouth, where food is mechanically broken down by chewing and mixed with enzymes that begin to break down the food chemically. The partially digested food then moves through the esophagus and into the stomach, where it is mixed with stomach acid and further broken down into a liquid called chyme.
From the stomach, the chyme moves into the small intestine, where it is mixed with enzymes from the pancreas and bile from the liver. These enzymes continue the process of breaking down the food into its individual molecules, such as sugars, amino acids, and fatty acids. These molecules are then absorbed into the bloodstream through the walls of the small intestine and transported to the liver, where they are processed and used for energy.
Digestion is a complex and essential process that allows the body to extract the nutrients it needs from the food we eat. It involves both mechanical and chemical processes, and is aided by a number of organs and enzymes in the digestive system.