Here's the New Edition of the most concise and up-to-date account of embryology and birth defects...from fertilization and week-by-week maturation to the development of the major organ systems and the causes and pathogenesis of congenital anomalies. Each chapter has been fully revised and updated, and contains more clinically oriented material than ever before. Readers can easily access all of the answers to the most commonly asked questions about this complex subject. Features: * vivid full-colour, 3-dimensional drawings, clinical photographs, scanning electron micrographs, and high resolution ultrasound and MR images that clearly and accurately depict each stage of embryonic development. * Poses Commonly Asked Questions at the end of each chapter, complete with answers supported by current research and medical practice. * Highlights the clinical applications of embryology in 2-colour boxes. * Covers a wealth of diagnostic techniques used to prevent and treat common congenital defects, including amniocentesis, chorionic villus sampling, and ultrasonography. * Includes case studies that emphasize the clinical importance of embryology. * Contains references at the end of each chapter, including classic works and the most current research. * Offers clear and concise explanations of all clinical terms. * Presents timetables that illustrate critical periods in prenatal development. * Provides summaries at the end of each chapter for quick review.