Villi % of Cell Surface Area: 50
Radius: 1x
Cell Shape: 10:1
# of Dimples: 40
Dimple % of Cell Surface Area: 1
Highest Rate of Diffusion: 4.64(r)
The smaller the surface area, the faster the diffusion rate is, but with a bigger surface area the rate of diffusion is much slower due to a bigger cell. As molecular size(radius) increases, diffusion rate decreases, vice versa. Villi increases the surface area on the intestine which helps in the increase absorption(rate of diffusion). Finally, a cell will have the highest rate of diffusion if it is in a cylindrical shape with many villi and dimples.
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