What does white spots in your nail mean. In a few cases, white spots on fingernails can indicate an underlying infection. [ Source: http://www.chacha.com/question/what-does-white-spots-in-your-nail-mean ] More Answers to What does white spots in your nail mean.
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.
Once inside the lumen of the nephron, small molecules, such as ions, glucose and amino acids, get reabsorbed from the filtrate: 1  Specialized proteins called transporters are located on the membranes of the various cells of the nephron. 2  These transporters grab the small molecules from the filtrate as it flows by them.