Anatomy Practice Exam 2026 - Free Anatomy Practice Questions and Study Guide

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Which type of digestion involves the physical breakdown of food?

Chemical digestion

Mechanical digestion

The type of digestion that involves the physical breakdown of food is mechanical digestion. This process includes actions such as chewing by the teeth and the churning of food in the stomach, which physically reduces food into smaller, more manageable pieces. Mechanical digestion is crucial because it increases the surface area of food particles, making them more accessible for subsequent chemical digestion, where enzymes break down the food into simpler molecules.

Understanding mechanical digestion is essential, as it is the first step in the digestive process that prepares food for enzymatic breakdown, facilitating nutrient absorption later in the digestive tract. This process highlights the importance of physical actions in the digestive system, contrasting it with chemical digestion, which relies on enzymes and other biochemical processes.

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Digestive fermentation

Metabolic digestion

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