Answer :
Final answer:
A specialized epithelium for passive diffusion would have adaptations that promote efficient movement of substances between fluids.
Explanation:
An epithelium that is specialized for passive diffusion of materials between two fluids would exhibit certain characteristics. These characteristics include a thin structure to allow for easy diffusion, a large surface area to maximize the exchange of materials, and a high density of transport proteins in the cell membranes to facilitate the movement of molecules.
For example, in the epithelium of the blood vessels, the endothelial cells are thin and flattened, allowing oxygen and nutrients to easily diffuse from the blood into the surrounding interstitial fluid. Additionally, these cells have a large surface area due to their numerous small projections called microvilli, which further enhance the transport of materials. Overall, a specialized epithelium for passive diffusion would have adaptations that promote efficient movement of substances between fluids.
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Answer: single layer of flattened cells, with thin walls.
One of the characteristic features of epithelium is possession of single layer of flattened thin cells which are one cell thick. This reduces diffusion distance, and increases the rate of diffusion across the walls.
Based on Fick's law, the rate of diffusion is proportional to concentration gradient, surface area of a medium,but inversely proportional to diffusion distance.
Therefore as the diffusion distance is very short in this epithelium,(flattened ,thin cells)the rate of diffusion will be high across the walls, therefore a good adaptation for the epithelium for passive diffusion.
Explanation:
