During exercise, ventilation initially increases due to A) increased blood CO₂ levels, stimulating baroreceptors. B) decreased blood O₂ levels, stimulating chemoreceptors. C) decreased blood pH levels, stimulating baroreceptors. D) limb movements that stimulate the respiratory center. E) abrupt changes in metabolism or blood gases.

Question

Quizplus · Accepted Answer

Limb movements during exercise stimulate proprioceptors, which send signals to the respiratory center in the brain to increase ventilation even before significant changes in blood gases occur.

During Exercise, Ventilation Initially Increases Due to