The Hosford Muscle Tables: The text format lists origin, insertion, action, blood supply, & innervation of muscles.
Atlas of the Human Body from the American Medical Association: The illustrations for Effects of Stroke and Hand--Carpal Tunnel are unique; the site also gives concise illustrations of blood supply and anterior and posterior views of all the body muscles and more.
Enhanced Neurological Eye Simulator: From UC Davis University of California. "Disable" various ocular muscles and as you move your mouse, you can see how gaze is altered.
Lumen Learn 'Em: I like the unique content on the site (Cutaneous Innervation and Dermatomes) but you may have to drag the frames with your mouse to enlarge the viewing area, which can be a bit annoying at times.
Muscle Atlas from the University of Washington: Color illustrations of individual upper and lower extremity muscles and concise information: Origin, Insertion, Action, Innervation, and Arterial Supply.
Musculoskeletal Atlas: From the University of Washington.
Winking Skull:From the medical publisher Thieme. You don't need to register or pay to use the site, but you may need to download a free plug-in; click on a region (linked towards the lower right) to begin, includes views of muscles and bones with ligaments.
Inner Body: Your Guide to Human Anatomy Online: It's interactive and we recommend it for our high-school level allied health program. (I was getting Pop-up ads with it)
Anatomy Subject Guide: From the Medical University of South Carolina Library with brief annotation to each resource.
Anatomia Collection: This collection features approximately 4500 full page plates and other significant illustrations of human anatomy selected from the Jason A. Hannah and Academy of Medicine collections in the history of medicine at the Thomas Fisher Rare Book Library, University of Toronto.
Laboratoire d'Anatomie - Faculté de Médecine Toulouse-Purpan : Anatomy resource from the Université Paul Sabatier in Toulouse, France [French]. Index des fiches de synthèse.
Visible Human Project : [U Michigan site] The Visible Human Project® is the creation of complete, anatomically detailed, three-dimensional representations of the normal male and female human bodies [ NLM's site ].
The Virtual Autopsy: This site contains 18 autopsy cases with interactive cadavers and quizzes.
Virtual Body: By Medtropolis available in English and Spanish text and audio, this resource has an interactive component and teaches the basics of the brain, skeleton, heart, and digestive tract. The target audience is the public.
eSkeletons : Provides an interactive environment in which to examine and learn about skeletal anatomy and view the bones of both human and non-human primates [U Texas].