by Arthur C. Guyton, John Edward Hall
ISBN: 072168677X
Buy on Amazon
Found in 1 comment on Hacker News
bcater · 2009-01-11 · Original thread
I really enjoyed Guyton:

http://www.amazon.com/Textbook-Medical-Physiology-Arthur-Guy...

I wasn't a biology major, but from what I understand, this is a standard in the field.