Digestive system
The digestive tract runs from the mouth to the anus. Accessory organs such as the liver, gallbladder and pancreas add bile and enzymes that help break down food.
The atlas models this system as interactive 3D geometry (toggle it in the Systems panel).
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Common questions
What are the accessory organs of digestion?
The salivary glands, liver, gallbladder and pancreas contribute secretions to digestion but are not part of the tube through which food passes.