Afferent impulses to respiratory center from higher centers. Afferent impulses to respiratory center from non-chemical receptors Pulmonary stretch receptors (Hering–Breuer inflation reflex) J-receptors Irritant receptors in respiratory tract – a. Cough reflex b. Sneezing reflex c. Hering–Breuer deflation reflex d. Deglutition reflex Proprioceptors Chest wall stretch receptors Baroreceptors Thermoreceptors Coronary chemoreceptor