The respiratory system is responsible for taking in oxygen and releasing carbon dioxide. When a person walks, he or she breathes at a fairly slow rate. However, when he or she starts running, the oxygen requirement of the body increases, and the body is signaled to increase the rate at which the person breathes. Which body system interacts with the respiratory system to signal that the body's oxygen requirement has changed?
A.
musculoskeletal
B.
digestive
C.
excretory
D.
nervous