Human embryogenesis is the process of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, human development entails growth from a one-celled zygote to an adult human being. This book “Inderbir Singh’s Human Embryology” consists of 25 chapters, which include introduction and some preliminary considerations, genetics and molecular biology in embryology, reproductive system, gametogenesis, ovarian and menstrual cycles, fertilization and formation of germ layers, further development of embryonic disc, placenta, fetal membranes and twinning, formation of tissues of the body, pharyngeal arches, skeletal system and muscular system, face, nose and palate, alimentary system, liver and biliary apparatus, pancreas and spleen, respiratory system, cardiovascular system, urogenital system, nervous system, endocrine glands, development of the ear, and embryology ready reckoner. Each chapter is enriched with cutting-edge information, beginning with competencies and flowing seamlessly into core content, supported by engaging illustrations and flowcharts. I have integrated molecular regulation and clinical correlations throughout the chapters to maintain readers interest and foster a deeper understanding. At the end of each chapter, summaries and self-assessment questions are provided to aid students in their examination preparation. This book is designed to serve as a thorough resource for students, researchers, and healthcare professionals, providing an in-depth understanding of the principles and mechanisms that govern embryonic development.

While the text is written by a classical anatomist and traditionally taught within the First Professional M.B.B.S. anatomy curriculum, DDC rules explicitly mandate that Human Embryology (prenatal development, organogenesis, and gestational timelines) must be classified under human physiology rather than structural gross anatomy Veeramani Raveendranath : Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India