Gases are exchanged in the alveoli through a process called diffusion. Oxygen from the inhaled air passes through the alveolar membrane into the surrounding capillaries, where it binds to hemoglobin in red blood cells. Simultaneously, carbon dioxide in the blood diffuses from the capillaries into the alveoli to be exhaled. This exchange occurs efficiently due to the thin walls of the alveoli and the large surface area they provide.
alveoli
Alveoli
carbon dioxide and oxygen
The respiratory and circulatory systems are involved in the exchange of gases between the alveoli and blood. The alveoli are part of the lungs, and their surrounding capillaries are part of the circulatory system.
Oxygen diffuses from the alveoli of the lungs into the blood. Carbon dioxide diffuses from the blood into the alveoli of the lung where is will be exhaled.
Mostly oxygen & carbon dioxide - but also some nitrogen.
Alveoli are site of gas exchange. Actual diffusion of gases occurs at interstitial space between capillaries and alveolar cells.
Gaseous exchange takes place in the alveoli in the lungs, Oxygen is inhaled while Carbon dioxide is exhaled.
oxygen and carbon dioxide are exchanged in alveoli (singular alveolus).
Oxygen is exchanged from the air in the alveoli into the blood in the capillaries, while carbon dioxide is exchanged from the blood in the capillaries into the air in the alveoli during the process of respiration.
The humorus
Alveoli