name the process which is used by various organisms for the exchange of gases
Dear Student
Exchange of gases in organisms occur through diffusion.
Each alveolus is made up of highly-permeable and thin layers of squamous epithelial cells. Also, blood capillaries have layers of squamous epithelial cells. Oxygen-rich air enters the body through the nose and reaches the alveoli. The deoxygenated blood from the body is brought to the heart by the veins. The heart pumps it to the lungs for oxygenation to lungs. The exchange of O2 and CO2 takes place between the blood capillaries surrounding the alveoli and the gases present in the alveoli.
The exchange of gases in alveoli takes place by simple diffusion because of pressure or concentration differences. The barrier between the alveoli and the capillaries is thin and the diffusion of gases takes place from higher partial pressure to lower partial pressure.
The venous blood that reaches the alveoli has lower partial pressure of O2 and higher partial pressure of CO2 as compared to alveolar air.Then, oxygen diffuses into blood. Simultaneously, carbon dioxide diffuses out of blood and into the alveoli.
Regards
Exchange of gases in organisms occur through diffusion.
Each alveolus is made up of highly-permeable and thin layers of squamous epithelial cells. Also, blood capillaries have layers of squamous epithelial cells. Oxygen-rich air enters the body through the nose and reaches the alveoli. The deoxygenated blood from the body is brought to the heart by the veins. The heart pumps it to the lungs for oxygenation to lungs. The exchange of O2 and CO2 takes place between the blood capillaries surrounding the alveoli and the gases present in the alveoli.
The exchange of gases in alveoli takes place by simple diffusion because of pressure or concentration differences. The barrier between the alveoli and the capillaries is thin and the diffusion of gases takes place from higher partial pressure to lower partial pressure.
The venous blood that reaches the alveoli has lower partial pressure of O2 and higher partial pressure of CO2 as compared to alveolar air.Then, oxygen diffuses into blood. Simultaneously, carbon dioxide diffuses out of blood and into the alveoli.
Regards
