I have found two great free web pages that help you understand the human body. They are interactive links. Easy to use and understand.  They will help technicians to better understand the human body. Check both of them out.

Links for learning the human body

http://www.bbc.co.uk/science/humanbody/body/index.shtml?skeleton

http://www.innerbody.com/

Enjoy learning about the human body.