Illustration of the human digestive system (The Gale Encyclopedia of Science, 2010)
An internal view of the mouth and pharynx, or throat. The throat serves the digestive system by allowing the passage of solid food and liquids. (Body by Design, 2010)
This illustration shows the parts of the human mouth: lips, upper jaw, mucous membranes, nasal passages, hard palate, soft palate, uvula, pharynx, tonsils, tongue, lower jaw, and teeth. (Gale Science in Context, 2010)
An illustration of a stomach showing the esophagus, mucosa, glands, stomach muscles, sphincter, and small intestine. (Gale Science in Context, 2010)
Depiction of colon and path towards rectum. (World of Health, 2010)