Digestion Journey

Class 7 Science: nutrition in animals (human digestion)

Follow a bite of food through your body, from the mouth to the end. What happens at each stop?

Words to know

Alimentary canal: The long tube food travels through, from mouth to anus.
Digestion: Breaking food down into simple substances the body can absorb.
Absorption: Digested food passing into the blood, mostly in the small intestine.
Saliva: Juice in the mouth that starts digesting starch.

Answer 3 questions to check what you learned.

1. Where are most nutrients absorbed?

2. Which organ makes bile?

3. Where does digestion of starch begin?

Chew a piece of plain bread or chapati slowly for a minute without swallowing. Does it start to taste sweet? Saliva is turning starch into sugar.