Most of the chemical digestion of food in humans is completed in the

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The small intestine is where the majority of chemical digestion occurs. This is where enzymes from the pancreas and lining of the small intestine break down carbohydrates, proteins, and fats into smaller molecules that can be absorbed by the body. The stomach also plays a role in chemical digestion by secreting gastric juice, but it is primarily responsible for mechanical digestion (churning and mixing food with stomach acid) and does not break down all types of nutrients. The mouth begins the process of mechanical and chemical digestion through the actions of teeth, saliva, and enzymes, but this is a small part of the overall process. The appendix and ascending colon do not play a significant role in digestion.

Most of the Chemical Digestion of Food in Humans Is