<prompt> Which of the following does not stimulate peripheral chemoreceptors?HypoxiaHypocapniaAcidosisLow perfusion pressure  <response>: Hypercapnia is a stimulus not hypocapnia. Low perfusion produces hypoxia and hypercapnia at the level of chemoreceptors; thus stimulating them. Peripheral arterial chemoreceptors in the carotid and aortic bodies have very high rates of blood flow. These receptors are primarily activated by a reduction in partial pressure of oxygen PaO2, but they also respond to an increase in the partial pressure of carbon dioxide PaCO2 and pH. Reference: Ganongs Review of Medical Physiology T W E N T Y - F I F T H E D I T I O N page no 593 