What role do enzymes play in the human digestive process?

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Diagram of the human digestive system viewed from the front, showing and labeling organs including the mouth, teeth, tongue, salivary glands, pharynx, esophagus, liver, stomach, gallbladder, pancreas, large intestine, small intestine, appendix, rectum, and anus. — human digestive system The human digestive system as seen from the front.

Enzymes are crucial catalysts in the human digestive system, facilitating the breakdown of complex food molecules into simpler forms that the body can absorb. For instance, amylase in saliva begins the digestion of starch into sugar. In the stomach, pepsin starts the breakdown of proteins. The small intestine receives further digestive enzymes from the pancreas, including those that break down proteins, fats, and carbohydrates. Lipase, for example, splits fats into fatty acids and glycerol. These enzymatic actions are essential for extracting nutrients and energy from food.12734