Name the renal process that occurs at the renal corpuscle.

Answer: Filtration

Blood that is going to be filtered enters the first part of the nephron, the glomerulus, which is a tuft of capillary vessels. The glomerulus is inside a "sac" called a glomerular capsule. Together, the glomerulus and the glomerular capsule form the renal corpuscle, which is the filtering unit.