Here is the mother of all word lists concerning the human body. "Terminologia Anatomica", published online by the Federative International Programme on Anatomical Terminologies.
http://www.unifr.ch/ifaa/Public/EntryPage/ViewSource.html
and while we are on the subject, here is a page with over 50 links to over 50 dictionaries in the medical and nursing field.http://www.rtstudents.com/rnstudents/rn-dictionary.htm