On-Line Biology Book: The Digestive System
Covers the stages in the digestive process, regulation of appetite, and the system's components.
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookDIGEST.html
Introductory Anatomy: Digestive System
Offers a brief description of the shape and function of the major components of the digestive system.
www.leeds.ac.uk/chb/lectures/anatomy8.html