The series of lectures in this netcast constitute the Rheumatology module of the Human Pathophysiology Course for 2nd year medical students in the Johns Hopkins School of Medicine that was held on October 22 through October 27, 2004. The coordinator of the Rheumatology module is Antony Rosen, M.D., Associate Professor of Medicine, Division of Rheumatology. The Course Director of the Human Pathophysiology Course is Charles Wiener, M.D., Associate Professor of Medicine, Division of Pulmonary and Critical Care Medicine.