What best defines vasa vasorum ?
Correct Answer: Small blood vessels supplying walls of large blood vessels
Description: The vasa vasorum is a network of small blood vessels that supply the walls of large blood vessels, such as elastic aeries (aoa) and large veins (vena cava). Depending on the type of vasa vasorum, it penetrates the vessel wall staing at the intimal layer or the adventitial layer. Due to higher radial and circumferential pressures within the vessel wall layers closer to the main lumen of the aery, vasa vasorum externa cannot perfuse these regions of the vessel wall. imageref-sciencedirect.com
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