Animal Anatomy and Physiology
Animal anatomy and physiology is generally pretty well covered in Campbell's, though some questions may reference other physiology concepts. A good book for post-Campbell's studying is BRS Physiology.
Some topics to REALLY know in Campbell's: everything about hormones, disorders, and feedback cycles. Additionally, some semifinal tests will test histology, which isn't really covered in Campbell's, but is presented in the links below.
Folliculogenesis - Know each stage of folliculogenesis
Histology Slides - Be able to identify major organs/blood cells
Hormonal Inbalence Diseases - Be able to identify characteristics of each of the above mentioned diseases, names are not important
Hemoglobin - Understand the dynamics of picking up and dropping Oxygen
Insect Morphology - Know the parts of the legs and the mouth parts