You're going to need the textbook! I'm selling the fourth edition of Biology of Humans: Concepts, Applications, and Issues by Judith Goodenough. Now, my copy is the international edition, but there is pretty much no difference from the original. All the chapters are there, and they are all the same. It has served me well.
E-mail me with offers, and I will definitely give you a better deal than most websites. I know what it's like to get gutted on these books.