Question

What route does carbon dioxide follow as it leaves the body?
(1) pulmonary vein ï® alveolus ï® bronchus ï® bronchiole
(2) pulmonary artery ï® alveolus ï® bronchus ï® bronchiole
(3) pulmonary vein ï® alveolus ï® bronchiole ï® bronchus
(4) pulmonary artery ï® alveolus ï® bronchiole ï® bronchus

Answer 1

Under most circumstances, your body will maintain a constant internal environment called homeostasis, which keeps your body working properly. Your nervous system and hormones are responsible for keep your body working efficiently, including keeping your oxygen and carbon dioxide at optimal levels. The majority of this CO2 and O2 exchange happens in your respiratory system, but there are other means to rid your body of these gases.

Answer 2

Answer:

(2) pulmonary artery ï® alveolus ï® bronchus ï® bronchiole