This book is a well-structured and critically acclaimed resource with a comprehensive eye on embryology. Embryology is the branch of science concerned with the development of an embryo from the fertilization of the ovum to the fetus stage. The genomic and molecular revolutions in the second half of the 20th century, along with the classic vivid aspects of this science, have induced a greater sense of understanding about many developmental events. With this understanding, contemporary embryology has developed an inclination towards providing practical knowledge that can be valuable in understanding assisted reproduction, stem cell therapy, birth defects and other related aspects. This book emphasizes on human embryology and aims to provide a timely source of information on a variety of selected topics. This book discusses gametes and infertility, implantation, placentation and early development and finally, perspectives in embryology. This book will be a valuable reference to biology and medical students, clinical embryologists, laboratory researchers, obstetricians and urologists, developmental biologists, molecular geneticists and anyone who is interested in recent advances in human development.