Which blood gas change has the least direct effect on central chemoreceptors?
Show answer and explanation
Correct answer: Decrease in oxygen
Central chemoreceptors are relatively insensitive to oxygen levels. They primarily respond to CO2 and pH changes.
Keep practicing
More Control of respiration questions
- Which of the following describes the primary mechanism by which central chemoreceptors are stimulated during a rise in arterial PCO2?
- The Hering-Breuer inflation reflex is a protective mechanism that limits inspiration. Which pathway and receptor type are responsible for t…
- At what threshold of arterial PO2 do peripheral chemoreceptors significantly increase their firing rate to drive ventilation?
- Which cell type in the carotid body acts as the actual oxygen sensor by closing oxygen-sensitive K+ channels during hypoxia?
- Which respiratory center in the brainstem is responsible for 'switching off' inspiration, thereby regulating the inspiratory volume and res…
- During heavy exercise, ventilation increases almost immediately, often before any changes in arterial blood gases are detected. What is the…