Interactions of Neurotransmitters and Endothelial Cells in Determining Vascular Tone; J.T. Shepard Some Recent Advances in Studies on J Receptors; A.S. Paintal Pathophysiology of Bronchial Asthma; J.G. Widdicombe Laryngeal and Upper Airway Influences on Breathing; G. Sant'Ambrogio Regulation of Na+/K+ Pump Expression in Skeletal Muscle; S. Sampson Peripheral Arterial Chemoreceptors; Aortic and Abdominal Glomera; A. Howe Cellular Mechanisms of Modulation of Hypoglossal Motoneuron Activity; A. Berger Cardiac and Pulmonary C Fibers: Their Central Connections C. Kidd Central Nervous Mechanisms Responsible for Cardiorespiratory Homeostasis K.M. Spyer Neuroendocrine Regulation of Vascular Capacitance: F. Karim Lung Microphysiology; J. Bhattacharya Reflex Control of the Circulation in Heart Failure; I. Zucker Physiology of Atrial Receptors; R. Linden Aspects of Coronary Vasomotor Regulation; J. Hoffman Graded Restriction of Blood Flow in Exercising Leg Muscles: A Human Model; H. Bjurstedt Index.