The walls of alveoli are thin to allow the exchange of gases (Co2 and O2) between blood capillaries and the aveoli in the lungs.
Capillaries have thin walls to optimise the level of diffusion of oxygen and other nutrients in the blood stream to the surrounding cells.
gas exchange occurs between the thin walls of the alveoli and the thin walls of the capillaries
The walls of capillaries are very thin allowing the nutrients of cells to diffuse through them. They facilitate the diffusion of nutrients to the body by passing them through their cell walls.
it is because for the diffusion of water and oxygen molecules
Capillaries
Capillaries
Capillaries The smallest of the blood vessels: capillaries.
Oxygen passes into the capillaries that surround the alveoli. The thin walls of the capillaries make this diffusion easier.
The thin surface of alveoli allows for efficient gas exchange between the air in the lungs and the blood in the capillaries. This thinness minimizes the distance oxygen and carbon dioxide need to diffuse, ensuring rapid exchange and efficient oxygen uptake by the body.
Capillaries
the blood surround Alveoli in order to gas exchange between the Alveoli and red blood cell.
true