Biology

The Encyclopedia of Life aims to increase awareness and understanding of living nature by gathering, generating and sharing knowledge in an open, freely accessible and trusted digital resource.

Excellent list of links with good annotations.

The American Association for Anatomy (AAA) is the professional home for more than 2,500 students, teachers, and researchers of the anatomical sciences in nearly 60 countries around the world.

Excellent set of exercises from the University of Minnesota. Test your knowledge of all sorts of bodily parts and functions.

Human anatomy and physiology animations. Nicely done.

Links for human anatomy and physiology specifically for nursing students.

Choose the human system you want (skeletal, nervous, digestive, etc.). Then click on the highlights to get detailed information. Too many ads but useful info.

An in-depth tutorial on brain anatomy. Includes brain atlas, glossary, and quizzes. From the University of Utah.

Clear illustrations and brief descriptions of the muscles of humans. Divided into Upper and Lower Extremities. From the University of Washington

Nice photos of the human skeleton. You can also see videos and additional info on each bone by using the menu on the detail photos. From the University of Texas. You can also see skeletons of other primates.

Nice interactive guide to the human nervous system. From the National Teachers of Science Assn.