Dive deep into the world of endocrinology, a critical field of study that explores the body’s hormonal systems and their pivotal role in orchestrating various physiological and behavioral processes. This comprehensive course is designed for students with a keen interest in understanding how hormones, the chemical messengers of the body, develop, integrate, and regulate our bodily functions. We will embark on a detailed exploration of the different classes and sources of hormones, hormone production and synthesis, receptors and target tissues, mechanisms of action and regulation, and research methods in endocrinology. Through a curated selection of readings from the primary literature, we will examine landmark studies and current research focusing on classical endocrine systems, offering insights into how our understanding of endocrinology has evolved. Moreover, we will explore the pathophysiology of endocrine disorders, investigating how imbalances in hormonal regulation can lead to disease states. By the end of this course, you will have gained an appreciation for the complexity and beauty of the endocrine system, a critical component in the intricate biology of humans and animal.