[.ca] Medical Physiology (ISBN 0781719364)

almost as good as Guyton:
I used this book for an undergraduate renal/endocrine physiology class. For this material, it was excellent, but I still found myself referring back to my Guyton text fairly often. For comprehensive coverage of systems physiology, I would suggest Guyton. In addition, I think we got one of the first printings of this book a few years ago, and the binding everyone's book fell apart completely after only three months of use. I hope they've solved that problem.