english: Yet the blood vessels, they extend from the surface of the brain down to reach every single cell in the brain, which means that fluid that's traveling along the outsides of these vessels can gain easy access to the entire brain's volume, so it's actually this really clever way to repurpose one set of vessels, the blood vessels, to take over and replace the function of a second set of vessels, the lymphatic vessels, to make it so you don't need them.
non_english: Međutim, krvni sudovi dosežu od površine mozga do svake ćelije, što znači da tečnost koja se kreće duž njih može da prodre u čitavu zapreminu mozga i to predstavlja veoma dobar način da mreža krvnih sudova preuzme ulogu druge mreže, limfnog sistema, i učini je nepotrebnom.