Chapter 16, Problem 18RA

The hypoxic ventilatory response occurs when low arterial ${\text{Po}}_{\text{2}}$ stimulates the

$\begin{array}{l}\text{a}\text{. aortic bodies}\text{.}\hfill \\ \text{b}\text{. carotid bodies}\text{.}\hfill \\ \text{c}\text{. central chemoreceptors}\text{.}\hfill \\ \text{d}\text{. all of these}\text{.}\hfill \end{array}$