Is blood oxygen level monitored at medulla oblongata?

The medulla oblongata, located at the base of the brain, performs numerous vital functions, including controlling respiration and cardiovascular activities. While the medulla monitors various physiological parameters, blood oxygen levels are primarily monitored by specialized chemoreceptors located in the carotid bodies and aortic bodies. These chemoreceptors detect changes in arterial blood oxygen levels and transmit signals to the respiratory and cardiovascular centers within the medulla. The medulla then adjusts breathing rate, heart rate, and blood vessel diameter to maintain appropriate oxygen levels.