酸中毒时，血中氢离子（H“）浓度增高，呼吸加深加快；碱中毒时，血中H”浓度降低，呼吸受抑制。显然，血中H“浓度有调节呼吸的作用。在动物实验中，以人工溶液孤立灌注颈动脉体（位于颈总动脉分支处的血管附近，为外周化学感受器），如保持灌注液中氧（OZ）和二氧化碳（COZ Acidosis, the blood hydrogen ion (H “) concentration increased, breathing deepened; alkali poisoning, the blood H” concentration decreased respiratory depression. Obviously, the concentration of H "in the blood has the effect of regulating the respiration.In animal experiments, the carotid body is isolated and perfused with artificial solution (located near the blood vessels at the branch of the common carotid artery, as peripheral chemoreceptors) OZ) and carbon dioxide (COZ