Filtration. The process whereby some substances, but not all, pass through a filter. In a kidney, blood pressure forces materials through the filter(glomerulus) Blood passes thru the many glomeruli and the thin walls of the glomerulus (the filter) permits water, salts, sugar and urea to leave the blood stream.
Confidence votes 319K. The lead singer of the ban Evanescence is Amy Lee. Amy Lee has been the front woman of the band since the beginning and has helped lead the band to great success.
1 Bridgit Mendler as Olivia White, the lead singer of the band. She was a shy girl without any friends but eventually made friends with everyone in the band. 2  Adam Hicks as Wendell Wen Gifford, the pianist and also a rapper of the band.  Hayley Kiyoko as Stella Yamada.