Chemoreceptor CellsCarotid BodyCell HypoxiaAnoxiaSensitivity and SpecificitySodium CyanideRespirationCarbon DioxideOxygenCarotid SinusHypercapniaParaganglia, NonchromaffinChemotaxisAortic BodiesHypoxia, BrainPressoreceptorsReflexGlossopharyngeal NerveCatsPhrenic NerveFetal HypoxiaVagotomyDenervationMedulla OblongataPulmonary VentilationRespiratory MechanicsRespiratory CenterApneaAsphyxiaHypoxia-Inducible Factor 1, alpha Subunit