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The distal tubule reabsorbs sodium and bicarbonate and secretes potassium. The final segment of the renal tubule is the collecting tubule, which funnels the remaining filtrate toward the renal pelvis for excretion via the URETER as urine. Only water reabsorption takes place from the collecting tubule.ifferent portions of the loop of Henle reabsorb sodium, potassium, chloride, magnesium, calcium, and water. The loop of Henle plays a significant role in the concentration and dilution of the URINE, and is the target of some types of diuretic medications.
The part of the nephron where glucose reabsorption occurs is in the  proximal tubule.n other hand Secretion is the absorption of substances from blood. Renal Corpsicule-water, solute filtration Proximal Convoluted Tubule-Reabsorption of water, glucose, amino acids and some minerals. Secretion for H, Ammonia, Urea and Creatinine Loop of Henle-Reabsoprtion of water and minerals, secretion of Urea.