The structure of which of the following consi | vedclass

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(A) Capillaries were discovered by Marcello Malpighi in $1661$. These are very thin-walled because the $tunica$ $externa$ and $tunica$ $media$ are abs

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Blood capillary

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(A) Capillaries were discovered by Marcello Malpighi in $1661$. These are very thin-walled because the $tunica$ $externa$ and $tunica$ $media$ are absent. The capillary wall is formed by only the $tunica$ $interna$ or endothelium,which is a single layer of cells. These connect arterioles to venules and are specialized for exchanging substances with interstitial fluid. According to local tissue requirements,these can be constricted or dilated.

The structure of which of the following consists of a layer of single cell thickness?

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