Process of Digestion
Digestion is the process by which our body breaks down food into smaller molecules that can be absorbed into the bloodstream for energy and nutrients. It involves both mechanical and chemical processes that start in the mouth and continue through the digestive tract.

Ingestion
- The process of taking food into the mouth is called ingestion.
- Food is chewed and mixed with saliva to form a bolus, which is then swallowed.

Chewing and Swallowing
- The teeth break down food into smaller pieces through chewing.
- Saliva in the mouth contains enzymes that begin the breakdown of carbohydrates.

Stomach Digestion
- The bolus travels down the esophagus to the stomach, where it is mixed with gastric juices.
- Gastric juices contain hydrochloric acid and enzymes that further break down the food.
- The mixture of food and gastric juices forms chyme, which is released into the small intestine.

Small Intestine Digestion
- Most of the digestion and absorption of nutrients occur in the small intestine.
- Enzymes from the pancreas and bile from the liver help break down fats, proteins, and carbohydrates.
- Nutrients are absorbed through the walls of the small intestine into the bloodstream.

Large Intestine Digestion
- The remaining waste material moves into the large intestine, where water and electrolytes are absorbed.
- Bacteria in the colon break down remaining nutrients and produce some vitamins.
- The waste material is formed into feces and excreted through the rectum.

Conclusion
In conclusion, the process of digestion is a complex and essential function that allows our bodies to extract nutrients from food for energy and growth. By understanding the steps involved in digestion, we can make informed choices about our diet and overall health.

mouth to small intestine