Q1
Where does digestion begin?
AThe mouth
BThe stomach
CThe small intestine
DThe large intestine
ICSEClass 6 (ICSE)ScienceCh 17 · Topic 2
Practice and Revision - The Digestive System
Let us practise and revise what we learned about the digestive system. The digestive system breaks down the food we eat into nutrients our b
Core concept
Digestion begins in the mouth, where teeth break down food and saliva starts breaking down starches.
How it works
Food then travels through the oesophagus to the stomach, where acids and enzymes further break it down.
Why it matters
In the small intestine, nutrients are absorbed into the bloodstream, while the large intestine absorbs water and forms waste.
Key detail
The digestive system works together as a series of organs to ensure our body gets the nutrients it needs from food.
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Quick notes
• Digestion begins in the mouth.
• Teeth break down food; saliva starts starch digestion.
• Food travels through the oesophagus to the stomach.
• The stomach uses acids and enzymes.
• The small intestine absorbs nutrients.
• The large intestine absorbs water.
• The large intestine forms waste.
• The digestive system is a series of connected organs.