Contents (Volume 5A). List of Contributors. Foreword (I. MacIntyre). Preface (M. Zaidi). Section I General Principles. Aspects of Anatomy and Development of Bone the NM, uM, and MM Hierarchy (A. Boyde and S. Jones). Physiology of Bone Remodeling (C. Chenu and P.D. Delmas). Hormonal Regulation of Bone Remodeling (K. Wah Ng and T.J. Martin). Coupling of Bone Formation and Bone Resorption: a Model (J.T. Ryaby, R.J. Fitzsimmons, S. Mohan, and D.J. Baylink). Mechanotransduction in Bone (E.H. Burger, J. Klein-Nulend, and S.C. Cowin). Vascular Control of Bone Remodeling (T.S. Gross and T.L. Clemens). Parathyroid Hormone and Its Receptors (A.B. Abou-Samra). The Structure and Molecular Biology of the Calcitonin Receptor (S.R. Goldring). The Vitamin D Receptor: Discovery, Structure, and Function. (J.W. Pike). Molecular Physiology of Avian Bone (C.G. Dacke).