a drawing of the inside of a human leg, with an attached limb in the foreground
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How it works - Digestion - Nutrients, Proteins and carbohydrates, Lipids, vitamins, and minerals

A SIXTEENTH-CENTURY ANATOMICAL DIAGRAM OF THE INTERNAL ORGANS, SHOWING THE STOMACH, LIVER, INTESTINE, AND GALLBLADDER. (© Corbis. Reproduced by permission.)

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