Vertebrate Endocrinology: Fundamentals and Biomedical Implications, Volume 1: Morphological Considerations provides information pertinent to vertebrate endocrine systems, which has significant contributions to basic biological and biomedical research. This book discusses the practical implications of the endocrinological studies. Organized into 15 chapters, this volume starts with an overview of the endocrine process in lower vertebrates, which has provided basic information about the understanding of mammalian and human systems. This text then discusses the pituitary gland, which is considered to be functionally and structurally the most complex organ of the endocrine system. Other chapters consider the function of the pineal organ as a sensory organ capable of perceiving light stimuli in poikilothermic vertebrates. This book discusses as well the caudal neurosecretory system in lampreys, hagfish, holocephalans, and dipnoans. The final chapter provides the comparative morphology of the classical vertebrate endocrine organs. Endocrinologists, biologists, graduate students, and researchers will find this book useful.