Breathing is usually regulated by
A)erythropoietin levels in the blood.
B)the concentration of red blood cells.
C)hemoglobin levels in the blood.
D)CO2 and O2 concentration and pH-level sensors.
E)the lungs and the larynx.

Question

Quizplus · Accepted Answer

Breathing is regulated by various sensors in the body that detect changes in the levels of carbon dioxide, oxygen, and pH in the blood. These sensors signal the respiratory center in the brainstem, which adjusts the rate and depth of respiration to maintain homeostasis.

Breathing Is Usually Regulated by