How Does the Bowman's Capsule Contribute to Filtration?

The Bowman's capsule consists of two layers: the parietal layer and the visceral layer. The parietal layer is a simple squamous epithelium, while the visceral layer is made up of specialized cells called podocytes. Podocytes have foot processes that interdigitate with each other, forming filtration slits. These slits, along with the basement membrane and endothelial cells of the glomerulus, form the filtration barrier that determines what substances can pass into the renal tubules.