Know Your Body
Digestive System
From mouth to intestines
Official source located — human medical review required.
How it works
Your digestive system is a long tube that runs from your mouth to the end of your body. It includes your esophagus, stomach, and small and large intestines, along with your liver, pancreas, and gallbladder. Digestion starts in your mouth, where chewing and saliva begin to break down food. Your stomach then mixes food with digestive juices. Your small intestine absorbs nutrients, and your large intestine absorbs water before waste leaves your body.
Official source located — human medical review required.
Explore three questions
Select a card to open its answer. Select it again to close.
Three key learning points
- Digestion begins in the mouth, not the stomach.
- The digestive system includes the esophagus, stomach, small and large intestines, liver, pancreas, and gallbladder.
- The large intestine absorbs water and turns leftover waste into stool.
Official source located — human medical review required.
Five-question quiz
One question at a time, with feedback after each answer. There is no pass or fail here.
Question 1 of 5
All official sources for this lesson
Official source located — human medical review required.
Medical-review checklist for this system
- Confirm organ list and order are age-appropriate and not misleadingly simplified
- Confirm no content strays into digestive disorders (out of scope for this general-education module)