← Levels of organization

Follow a bite.

Where does food travel, and which organs help it along the way? Follow five steps through the digestive tract, then identify three organs by what they supply.

Follow a nutrient next

Body Unpacked connects foods with their nutrients and explains where those nutrients work in the body. This browser exercise covers general anatomy.

Explore Body Unpacked on iPhone or iPad

Anatomy reference: NIDDK’s guide to digestion. Exercise by Honest Little Apps.