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.
Broken  is a song by post-grunge / alternative metal South-African band Seether featuring American singer Amy Lee, the lead singer of Evanescence and former girlfriend of Seether vocalist Shaun Morgan. It was recorded in 2004 and was later included in Disclaimer II. This version includes electric guitar and violins. It peaked at No. 20 on the Billboard Hot 100 and at No. 3 on the ARIA singles chart.