I know sometimes the changes in editions for textbooks are so minor that it doesn't really make a difference but I'm not sure how the professors are about that. I haven't heard anything about them providing the books in class for physiology, I've always understood that you need to buy it. In the Email I just got from Tina about registration and everything, the Physiology book that is on the booklist is actually an older edition than the one they recommend on the nsu bookstore website, the website says you need the 13th edition and the booklist says the 12th. The 12th edition is much cheaper.