About the Author Cynthia Pfirrmann, M.S., Roswell, NJ Cynthia currently teaches Anatomy & Physiology and Biology at a Junior/Senior elective level, with academic course averaging 70-80 students per school year at Scotch Plains-Fanwood High School in Scotch Plains, New Jersey. She has also published other books with Barron’s, such as the E-Z Way Series and The New Jersey Biology Competency Test.  About the Publisher In the 1930s, Manuel H. Barron opened a bookstore in Brooklyn, New York.  People from the community asked Mr. Barron about books that might be available to help their children study for the New York State Regents exams. After realizing there wasn't anything available, Mr. Barron created his own study guides. 80 years later, Barron's has helped millions of people prepare for their next step.