Central Projections of Baroreceptor and Chemoreceptor Afferent Fibers in the Rat

Abstract
During the latter part of this century considerable advances have been made in the understanding of the neuronal mechanisms that regulate systemic arterial pressure. 1-5 It is now well established that the central nervous system participates in the homeostatic control of the circulation by generating appropriate command signals to effector organs on the basis of sensory information it receives about the level of arterial pressure and the chemical composition of the arterial blood. It has been suggested that an imbalance in the normal operation of this input-output relationship by central neuronal circuits may contribute to a chronic elevation in systemic arterial pressure. 6,7

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