erythrocytes
capillaries
capillaries
Diffusion
There are many substances they exchange, but the main ones are oxygen from the blood to the cells and CO2 from the cells to the blood.
Capillaries - The endometrium (epithelial lining/wall) of the capillaries is only one cell thick optimizing diffusion/osmosis between it and the tissue cells of the body
Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.
capillaries
Capillaries via osmosis
materials exchange between blood cells and blood
The exchange of gases between the blood and the body cells is known as internal respiration. This process involves the uptake of oxygen by the cells and the release of carbon dioxide into the bloodstream to be transported to the lungs for elimination.
internal respiration
capillaries