Functions of bile and hydrochloric acid for human digestion.

Bile is a special substance produced by the liver. It is secreted into the anterior compartment of the small intestine. This is where the final processing of all nutrients takes place. Bile activates enzymes found in the digestive juice and breaks down fats. In addition to activating enzymes, bile helps break down fat molecules. This helps them digest easily.

Hydrochloric acid is a substance produced in the human stomach. It affects the incoming food, thereby rendering it harmless. This acid creates an acidic environment that is optimal for the activation of gastric acid enzymes.