The 7th Edition of this classic book delivers more clinically oriented information on embryology and teratology than ever before. Week by week, stage by stage, you'll explore how organs and systems develop, why and when birth defects occur, and what the vital roles of the placenta and fetal membranes are in development. The Developing Human: Clinically Oriented Embryology, 7th Edition... • Integrates the molecular aspects of embryonic development, including information on stem cells • homeobox genes • gamete formation • regulation control and the molecules/receptors involved • gene activity and expression • and more. • Includes a wealth of clinical case studies-enabling you to relate all of the material to clinical practice. • Features a superb art program of line drawings, sonographs, MRIs, electron micrographs, 3D images, and clinical photographs. • Incorporates the new terminology developed for embryology-the Terminologia Embryologica. • Presents completely revised and updated Problems and Answers based on the current requirements of the USMLE Step 1. Turn toThe Developing Human, 7th Edition for an easy-to-read, in-depth account of every aspect of human development, both normal and abnormal.