digestions

Digestion is the process by which food is broken down into smaller molecules that can be absorbed into the bloodstream and used by the body. This process begins in the mouth, where food is mechanically broken down by chewing and chemically by saliva. Saliva contains enzymes that start the breakdown of carbohydrates.

Once swallowed, food travels down the esophagus to the stomach. In the stomach, food mixes with stomach acid and enzymes, which further break down proteins. The stomach then empties its contents into the small intestine. The small intestine is where most of the nutrient absorption occurs. Here, enzymes from the pancreas and liver, along with enzymes produced by the intestinal wall, break down carbohydrates, proteins, and fats into absorbable units.

The large intestine receives the remaining indigestible material. Its primary role is to absorb water and electrolytes, forming waste products that are eliminated from the body as feces. This entire process, from ingestion to elimination, is crucial for obtaining energy and nutrients necessary for life.