I am a New York State certified Biology teacher that is currently working on my master's. I needed to make up a lesson plan that incorporated technology so I chose to use several sites from the Merlot site. I found the graphs in this site to be very accurate.
I though this site was a great tool for students to use to review the human body systems. It is not always easy to look at a book and try and remember the different parts of the body systems. This site actually lets students test and retest themselves. The site is very easy to maneuver around and is very easy to access. I had no trouble navigating around the site.