The Bowman’s capsule is an expansion at the closed end of a renal tubule. A kidney’s renal corpuscle is composed of tangled clusters of blood capillaries, called a glomerulus, and a thin-walled, saclike structure called the Bowman’s capsule, which surrounds the glomerulus. The Bowman’s capsule is composed of two layers of cells: an inner layer that closely covers the glomerulus, and an outer layer Continue Scrolling To Read More Below...