What reflex is associated with the sensory stimulation of the pulmonary stretch receptors that stimulate a deeper breath upon inspiration?
a. Carotid
b. Head's paradoxical
c. Hering-Breuer
d. J receptor
ANS: B
If the Hering-Breuer reflex is blocked by cooling the vagus nerve, lung hyperinflation causes a further increase in inspiratory effort, the opposite of the Hering-Breuer reflex. The receptors for this reflex are called rapidly adapting receptors, because they stop firing promptly after a volume change occurs. Head's reflex may help maintain large tidal volumes during exercise and may be involved in periodic deep sighs during quiet breathing.
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