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.
Singer Steve Perry is one of rock's most famous vocalists. With the band Journey, he recorded several 1970s and '80s hits, including Don't Stop Believin' and Open Arms. Steve Perry was the lead singer of pop rock band Journey from 1977 to 1987. He is known for having a wide vocal range, which can be heard on such popular hits as Don't Stop Believin' and Oh Sherrie..