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If capillaries had tough elastic walls, their ability to facilitate the exchange of oxygen, nutrients, and waste products between blood and surrounding tissues would be severely impaired. The rigid structure would reduce their diameter, limiting blood flow and increasing resistance, which could lead to higher blood pressure. Furthermore, the essential permeability of capillaries would be compromised, disrupting the delicate balance of fluid exchange and potentially causing tissue hypoxia and edema. Overall, such a change would undermine the critical functions of the circulatory system.

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1mo ago

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What vessels contain elastic fibers in the walls that are stretched during systole?

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The elastic walls helps regulate blood pressure.


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noin


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Capillaries have thin walls to optimise the level of diffusion of oxygen and other nutrients in the blood stream to the surrounding cells.


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the walls of the alveoli are very thin but strong layers of elastic tissue lines with a single layer of flattened epithelium.


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