Capillary walls are usually one cell thick to increase the rate of diffusion by decreasing the distance.
Les parois des capillaires sont généralement d'une seule cellule d'épaisseur pour augmenter la vitesse de diffusion en réduisant la distance.
| Front | Why are the walls of capillaries usually one cell thick? |
|---|---|
| Back | This increases the rate of diffusion by decreasing the distance over which it occurs. |
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