The digestive system is a group of organs (from the mouth to the rectum) that processes food so the body can use it. The following sites explain the process with illustrations and animations for all age groups.
Dr. Richard A. Bowen, biology professor at Colorado State University, presents an overview of the digestive system for high-school and college students.
For elementary grades, Enchanted Learning explains the digestive process, defines twenty-three digestive-system terms, and includes two printable handouts.
This digestive system tour is one of ten anatomy system animations at Innerbody.com.
"Even before you eat, when you smell a tasty food, see it, or think about it, digestion begins. Saliva (say: suh-lye-vuh), or spit, begins to form in your mouth."
Yucky turns science into fun by tackling the topics that elementary and middle-school kids like to laugh about: belches, farts, gurgly stomachs, poop and vomit.
Human anatomy is the study of the human body. The word "anatomy" derives from Greek words meaning "to cut up" because early scientists studied anatomy through dissections.
With games, interactive anatomy maps, and quick facts, BBC presents organs, muscles, the skeleton, nervous system and puberty.
To create the interactive Anatomy Atlas, more than 1500 slices from CT (computed tomography) and MR (magnetic resonance) scans were selected, labeled and combined with medical illustrations.
Start by choosing one of ten tours: skeletal, digestive, muscular and so on. To navigate around the images, click on the colored squares (called pick points) to display a label and additional annotation.
Designed for elementary and middle-school kids, this site is fun and noisy. Click on the girl's heart to hear it beating, or over her intestines for a ... never mind.
The Virtual Body (or "El Cuerpo Virtual" in Spanish) is my bilingual anatomy pick of the day.