The role of the renal corpuscle is to selectively filter the blood by allowing small molecules through but preventing plasma proteins from leaving the blood. This filtration occurs extracellulary and is done by what is know as the '''glomerular filtration barrier'''. This structure is made up of three layers: | The role of the renal corpuscle is to selectively filter the blood by allowing small molecules through but preventing plasma proteins from leaving the blood. This filtration occurs extracellulary and is done by what is know as the '''glomerular filtration barrier'''. This structure is made up of three layers: |