How does cellular respiration, the respiratory system, and the circulatory system relate and intertwine?

in what order do these three function, I understand that oxygen is taken in through the respiratory system and transported to the circulatory system through alveoli as oxygen is picked by the hemoglobin in the RBC's. And that cellular respiration takes in oxygen and glucose and produces necessary ATP for the... show more in what order do these three function, I understand that oxygen is taken in through the respiratory system and transported to the circulatory system through alveoli as oxygen is picked by the hemoglobin in the RBC's. And that cellular respiration takes in oxygen and glucose and produces necessary ATP for the bodies functions. But how do they connect to one another.
1 answer 1