Question

question 2
1 pts
the medulla oblongata regulates breathing by:
monitoring the co₂ concentration and ph of the blood
smoothing out the breaths
monitoring the o₂ and protein concentration
2 of these
none of these

Explanation:

The medulla oblongata is a part of the brainstem. It contains chemoreceptors that detect changes in the carbon dioxide ($CO_2$) concentration and pH of the blood. When $CO_2$ levels rise (which lowers the pH as $CO_2$ combines with water to form carbonic acid, $H_2CO_3$), it stimulates the medulla to increase the breathing rate. The pons (not the medulla) is more involved in smoothing out the breaths. And the medulla does not monitor protein concentration for breathing regulation.

Answer:

monitoring the $CO_2$ concentration and pH of the blood