Hebei Travel Guide. Hebei Province, with its beautiful Capital, Shijiazhuang, is located to the north of the Yellow River, and to the east of the Taihang Mountains.
The process by which oxygen and carbon dioxide are exchanged between the blood and air in the lungs is called. respiration. What are the signs of person breathing. hearing or feeling air being exhaled from the mouth. Respiratory rate is increased when too much of this is detected in the blood. carbon dioxide.
It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli. The walls of the alveoli actually share a membrane with the capillaries in which oxygen and carbon dioxide move freely between the respiratory system and the bloodstream.