In which of the following vessels does the vital exchange take place and also has the thinnest walls through which oxygen,nutrients,and wastes can pass?

Question

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Capillaries have the thinnest walls among all blood vessels through which vital exchange takes place. Oxygen, nutrients, and wastes can pass through the thin walls of capillaries to and from surrounding tissues. Microvenules, arterioles, and veins have thicker walls than capillaries.

In Which of the Following Vessels Does the Vital Exchange