The digestive system
The digestive system
How digestive system work, what are various parts.
5 depths≈ 231 min of reading52 practice questions
The ladder
Choose how deep to go
Every depth is open. Start where it feels interesting — you can always move back.
- Discoverabout 44 minFrom Bite to Flush: Your Food's JourneyThis lesson follows food from the first bite to the final exit, meeting each organ that cuts, dissolves and absorbs it. You will learn why digestion is really a long assembly line of physical crushing and chemical dissolving.
- Understandabout 39 minFood's Journey: From Bite to EnergyThis lesson follows food from the first bite to the final exit, explaining how each organ mechanically and chemically transforms food into absorbable nutrients. Learners will distinguish digestion from absorption and clear up common misconceptions about which organs do what.
- Investigateabout 51 minHow Your Body Unpacks a MealFollow food from bite to bloodstream and discover how each digestive organ changes conditions to speed or slow the work. Use a model gut to test how chewing, enzymes, and diet type shape what your body can extract.
- Go deeperabout 50 minJourney Through the Gut: How Your Body Turns Food into FuelFollow a meal through the human digestive tract to see how mechanical churning, enzymes, and acids break food into absorbable nutrients. Learn why villi matter more than you think, and how your body coordinates every step.
- Extendabout 47 minFrom Bite to Bloodstream: The Journey of a MealThis lesson follows a complete meal through the human digestive tract, explaining how each organ contributes to mechanical and chemical breakdown, how enzymes speed up reactions, and how lifestyle choices affect this process. It includes a design challenge for testing enzyme acti
Practise and apply
Question bank · 52 questions
2 sections from Foundation to Challenge, each with hints and a worked solution — or play a 10-question round for points and stars.
Foundation 14Core 18Stretch 12Challenge 8
Words to know
45 words are explained in these lessons
AbsorptionAmylaseanusBileBolusChemical digestionChymedigestive systemEnzymeFaecesfood pipe (oesophagus)Large intestine+33 more