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When Na+ is reabsorbed along with water in the proximal tubule, the luminal concentration of Cl− increases. This rise in Cl− concentration drives its passive reabsorption through two main mechanisms: Electrochemical Potential or Concentration Gradient as mentioned in the previous lecture.
reabsorption. Details of the bicarbonate exit mechanism across the basolateral membrane are not shown in this or subsequent figures. c.a., carbonic anhydrase. in the partial pressure of CO 2 in the blood (respiratory disturbances). However, it can also be seen that alter-ations in each of these parameters may represent a
Compare and contrast passive and active tubular reabsorption; Explain why the differential permeability or impermeability of specific sections of the nephron tubules is necessary for urine formation; Describe how and where water, organic compounds, and ions are reabsorbed in the nephron
Describe reabsorption and secretion in the proximal convoluted tubule, distal convoluted tubule, and the loop of Henle. Describe and apply your knowledge of the countercurrent multiplier system. Apply your knowledge of the collecting ducts and the recovery of water. The beginning of this section is a review of what you learned in HK*2810.
Compare and contrast passive and active tubular reabsorption; Explain why the differential permeability or impermeability of specific sections of the nephron tubules is necessary for urine formation; Describe how and where water, organic compounds, and ions are reabsorbed in the nephron
Reabsorption is the process by which water and solutes that have been filtered out of the blood capillaries are taken back into the bloodstream. It primarily occurs in the capillaries surrounding nephrons in the kidneys, ensuring essential nutrients and water are retained by the body.
With up to 180 liters per day passing through the nephrons of the kidney, it is quite obvious that most of that fluid and its contents must be reabsorbed. That recovery occurs in the PCT, loop of Henle, DCT, and the collecting ducts (Table 25.5 and Figure 25.17).
