What is the process by which food broken down into molecules small enough to be absorbed body?

Digestion is the process by which food is broken down into molecules small enough to be absorbed body. Complex substances, such as proteins, fats, and carbohydrates, are broken down into simpler substances, such as amino acids, fatty acids, and sugars.

Digestion begins in mouth, where food is chewed and mixed with saliva. Saliva contains an enzyme called amylase, which begins breaking down carbohydrates. The food then travels to the stomach, where it is mixed with gastric juices. Gastric juices contain hydrochloric acid and an enzyme called pepsin, which begins breaking down proteins.

The partially digested food then moves to the small intestine, where it is mixed with bile and pancreatic juices. Bile, which is produced by the liver, helps break down fats. Pancreatic juices contain a variety of enzymes, including amylase, protease, and lipase, which further break down carbohydrates, proteins, and fats, respectively.

The nutrients from the digested food are absorbed into the bloodstream through the walls of the small intestine. The undigested food moves to the large intestine, where it is eventually eliminated from the body.

The digestive system is a complex and efficient system that allows us to obtain the nutrients we need from food. Without digestion, we would not be able to survive.