I don't have a single semester of human anatomy and physio, but I've been given multiple acceptances on Dec 1. You just have to look at each school's requirements on their website or on the ADEA guide for dental schools. Some schools may also not require biochemistry for instance and it's just recommended instead.
MWU-AZ requires a course in anatomy and a course in physiology. If your school offers A&P as a single course, you need to take both semesters. One of the very few reasons I declined MWU-AZ.