<prompt> Hyperinflation of lungs is prevented by-Hering Breuer reflexIrritation reflexCushing reflexBainbridge reflex  <response>: Ans. is a i.e., Hering Breuer reflexo Hering-Breuer inflation reflex : This reflex is mediated by pulmonary stretch receptors in w hich inflation of lungs above a particular volume results in reflex inhibition of inspiration and initiation of expiration. The reflex tends to limit the tidal volume while increasing the respiratory frequency.o Hering-Breuer deflation reflex : - Rapid deflation of lungs tends to initiate prolonged inspiration, i.e., reflex hyperpnea in response to deflation.NameLocationStimulationAfferentResponseBaroreceptorsArterialCarotid sinus-9th nerve Aortic arch-1 Oth nerveBPAff.-9th 10th NTS Eff.-Buffer n.Sympathetic vasoconstrictor tone Sympathetic discharge to heart Parasympathetic discharge to heartCentral venous pressure receptorLt. atrium Pulmonary veins wall of great veins SVCJugular veins 10th nerve ChemoreceptorsCentralMedullaCO; HyperventilationPeripheralCarotid Aortic bodyHemorrhage Hypoxia Hypercapnia acidosisStimulates VMCPeripheral Vasoconstriction CO,THR,BPBainbridge ReflexesRt. atriumvena cavaeRapid infusion of bloodsaline atrial distension reflex tachycardiaBezold-Jariseh Coronary ChemoreflexLt. VentricleInj. of 5-HT, Veratrum Capsaicin, Nicotine in coronary artery Apnea, -BP, HR Tachypnea later onJ. ReflexPulmonary chemoreflexJuxtacapillary in walls of alveoli. C-fibresHyperinflation of lung normal inspiration -do-Cushing ReflexVMCICT in blood supply ot VMC systemic BP reflex in HRHering Breuer Reflex-Inflation -DeflationAirway SM cellsSteady Lung inflation Mark deflation of lung expiration expiration 