Regulation of respiration

Respiratory Structures in the Brainstem Video

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Location of the carotid and aortic bodies Location of the carotid and aortic bodies. Note that each carotid body is quite close to a carotid sinus, the major arterial baroreceptor. Both right and left common carotid bifurcations contain a carotid sinus and a carotid body.

Pathways by which increased arterial PCO2 stimulates ventilation. Note that the peripheral chemoreceptors are stimulated by an increase in H concentration, whereas they are also stimulated by a decrease in PO2. Video

Summary of factors that stimulate ventilation during exercise

Ventilation changes during exercise Ventilation changes during exercise. Note (1) the abrupt increase at the onset of exercise and (2) the equally abrupt but larger decrease at the end of exercise.

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