kidney cross section

thingiverse

The human kidney displays a well-defined structure consisting of an outer cortex and inner medulla when viewed under microscopic examination as a cross-section. Visible within this structure is a compact network of convoluted tubules which branch outward from the central collecting ducts like a branching tree, effectively maximizing filtration efficiency. Each renal pyramid serves to collect the concentrated waste materials produced during glomerular filtration by means of tiny venules and nephrons - microscopically apparent within the kidney as densely packed bundles. A single functional unit comprised of Bowman's capsule and an initial loop of Henle can be visualized on this level. Further microscopic study of a kidney's cross-section discloses the tubule cells in different stages of maturity - these being vital components of a healthy kidney since they participate in waste reabsorption. The compact network allows blood vessels to navigate between and beneath various pyramids - supplying nourishment directly while facilitating optimal filtration.