Introduction: General Concepts and Methods; Receptors, Mechanisms of Action, and Prostaglandins. Amine and Peptide Hormones from glands in the Head - Hypothalamus, Pituitary and Pineal: Hypophyseotropic Neurohormones of the Hypothalamus; Pituitary Anatomy and Hormones; Vasopressin and Oxytocin from the Hypothalamus; Growth Hormone from the Anterior Pituitary; Melanotropins and the Intermediate Pituitary; Melatonin and the Pineal and Retina. Amine and Peptide Hormones from Glands in or Near the Gut - Thyroid, Parathyroid, Pancreas, and Gastrointestinal: Triiodothyronine from the Thyroid, hmunology and the Thymus; Parathormone and Parathyroid, Calcitonin and Thyroid; Insulin and Glucagon from the Pancreas; Gastrointestinal Hormones. Steroid, Amine and Peptide Hormones Related to the Gonads and Adrenals: Steroid Hormones; Glucocorticoids and the Adrenal Cortex; Aldosterone and Adrenal, Angiotensin and Kidneys; Catecholamines and Adrenal Medulla; Pituitary Gonadotropins, Androgens and the Testes; Estrogens and Progesterone and the Ovaries; Pregnancy Hormones, Oxytocin and Prolactin. Other Endocrine Topics: Ageing, lebemation, Sleep Hormones, Cytokines, Chalones, Erythropoietin; Phytohormones, Invertebrate Hormones and Pheromones.