William Johnston of Lawrence Berkeley National Laboratory provides this classic and effective site. Using the frog as a model organism, The Whole Frog Project explores the potential uses of visualization and 3D imaging to enhance instruction. The page employs technologies such as MRI, X-ray CT scanning, and direct generation from mathematical descriptions to provide a variety of views of frog...
The Department of Biological Structure at the University of Washington, Seattle provides these Interactive Atlases, all of which may be useful as supplemental material in (human) anatomy classes. Each Atlas is comprised of a set of "structurally annotated" color images of each subject area (e.g., thorax, heart, neuroanatomy, or the knee). Containing 2-D and 3-D images from "cadaver sections, MRI...