describe the system of blood vessels associated with a nephron
Term. Describe the structural and functional relationships between the nephron tubules and their associated blood vessels. Definition. Portions of the nephron that extend from the renal corpuscle to the collecting duct allow exchange between the tubule and the peritubular capillaries.The epithelial cells in different segments are structurally different. For example, the membranes have different permeabilities and contain different transporters.ortions of the nephron that extend from the renal corpuscle to the collecting duct allow exchange between the tubule and the peritubular capillaries. The epithelial cells in different segments are structurally different. For example, the membranes have different permeabilities and contain different transporters.