Breathing is Usually Regulated By

Question

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.

Accepted Answer

Breathing is usually regulated by the levels of CO₂ and O₂ in the blood and pH-level sensors. These sensor cells are located in the medulla oblongata in the brainstem that sends signals to the diaphragm and intercostal muscles to regulate breathing.