Oxygen and carbon dioxide get into and out of cells via diffusion. The gases diffuse across the thin capillary wall, and then diffuse across the cell membrane.
Capillaries exchange food, oxygen, and carbon dioxide.
diffusion
The capillary bed in the lungs is where the oxygen and carbon dioxide are exchanged.
oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).
Oxygen diffuses from the alveoli into the capillaries, where it binds to hemoglobin in red blood cells for transport to tissues. Carbon dioxide diffuses from the capillaries into the alveoli and is exhaled from the body.
In the lungs, the diffusion of oxygen occurs from the alveoli (air sacs) into the blood capillaries, while the diffusion of carbon dioxide occurs from the blood capillaries into the alveoli for exhalation. This exchange process is facilitated by differences in partial pressures of oxygen and carbon dioxide between the air in the alveoli and the blood in the capillaries.
Oxygen is 'transported' from the lung capillaries to the body capillaries - in an inverse fashion carbon dioxide is transported from the body capillaries to the Lung Alveoli - the Answer is 'It is rich in CO2."
exchange of oxygen and carbon dioxide takes place in the capillaries
exchange of oxygen and carbon dioxide takes place in the capillaries
capillaries and the alveoli
Oxygen and carbon dioxide
Capillaries. The diffusion of nutrients, oxygen, carbon dioxide and wastes take place in the capillaries. If you want to be more specific, it would be the venous ends of the capillaries where carbon dioxide enters the blood.