Succeed on the USMLE, other board exams and course exams with this updated Sixth Edition of BRS Embryology. Acclaimed for its easy-to-read, easy-to-scan outline format, this bestselling book includes over 220 USMLE-style questions with complete answers and explanations, as well as exams at the end of each chapter and an end-of-book Comprehensive Examination. Enhanced by outstanding radiographs, sonograms, computed tomography scans and clinical photographs of various congenital malformations, this proven book covers the facts and concepts tested on the USMLE within the context of human embryologic development.