11. Digestive System
The digestive system comprises various organs that work collectively to break down food into simpler components for nutrient absorption. The process involves ingestion, mechanical and chemical digestion, absorption of nutrients, and egestion of waste. Key organs include the mouth, stomach, small intestine, large intestine, liver, and pancreas, each contributing crucially to digestion and nutrient processing.
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11.5Important Features
This section discusses critical features of the digestive system,...
What we have learnt
- The digestive system is essential for converting food into usable nutrients.
- Mechanical and chemical digestion are key processes in food breakdown.
- Each organ in the digestive system has a specialized function.
Key Concepts
- -- Digestion
- The process of breaking down food into simpler substances for nutrient absorption.
- -- Peristalsis
- Wave-like muscle contractions that move food through the digestive tract.
- -- Enzymes
- Biological catalysts that speed up chemical reactions, including the breakdown of food.
- -- Egestion
- The elimination of undigested waste from the body.
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