Renal Tubule

PCT

The proximal convoluted tubuleThe first part of the nephron tubule where most reabsorption of water, ions, and nutrients occurs. is made of simple cuboidal cells with lots of villiFinger-like projections in the small intestine that increase surface area for absorption.. These villi are needed to reabsorb the many items that have escape filtrationThe process by which fluid moves out of capillaries into surrounding tissues due to hydrostatic pre in the glomerulusA network of capillaries in the nephron where blood filtration occurs..

Nephron Loop

The neprhon loop is divided into the ascending and desceding limb of the loop. The loop of a juxtamedullaryRefers to nephrons or structures located near the boundary between the renal cortex and medulla. nephronThe functional unit of the kidney that filters blood and produces urine. dips deeper into the medullary pyramid than the loop of a cortical nephron. Each limb of the loop has a thick segment. It is made of simple cuboidal cellsThe basic structural and functional units of life.. There is also a thin segment, which is made up of simple squamous epithelial cells.

DCT

The distal convoluted tubuleThe part of the nephron where final adjustments to ion and water balance occur under hormonal contro, as other parts of the nephron, is made up of simple cuboidal epithelial cells. The diameter of the DCT is larger than the diameter of the PCT or the loop. The DCT, like the PCT, has villi on the apical surface of its cells. However, there are fewer villi on these cells than on the cells of the PCT.

Collecting Duct

The collecting ductA duct in the nephron that collects urine from multiple nephrons and adjusts water reabsorption. collects filtrateThe fluid that is filtered from the blood into the nephron and will eventually become urine. from many nephrons, not just one. Therefore the collecting ducts have the largest diameter of all the 2D circles you see in the kidney. Collecting ducts have two populations of cells. Principle cells are tasked with managing reabsorptionThe process of fluid moving back into capillaries from surrounding tissues due to colloid osmotic p or secretionThe process of moving substances from the blood into the nephron tubule to be excreted in urine. of sodium(Na⁺): Major ECF cation; important for fluid balance, nerve function. whereas the intercalated cells are tasked with managing pHA measure of hydrogen ion concentration in a solution..