Where does digestion of food begin? A. stomach; B....

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Key Concepts

Digestive System

The digestive system is the network of organs responsible for breaking down food, absorbing nutrients, and eliminating waste. It involves a series of processes that include both mechanical and chemical digestion, and each part of the system plays a specialized role in transforming ingested food into usable energy and building blocks for the body.

Oral Cavity

The oral cavity, or mouth, is where the digestion process begins. It serves as the entry point for food, where mechanical digestion occurs as food is chewed, and chemical digestion starts with the action of salivary enzymes. This initial breakdown is crucial for preparing food for further digestion in the stomach and intestines.

Enzymatic Digestion

Enzymatic digestion refers to the chemical breakdown of food using enzymes. In the mouth, salivary enzymes such as amylase start breaking down carbohydrates, setting the stage for deeper chemical digestion as food moves through the rest of the digestive tract.

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