Editing Tubular reabsorption & secretion
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*Mostly passive movement of solutes and water down their concentration gradients moves them from the tubular cell into the interstitial fluid between the tubular cells and the endothelial cells of the peritubular capillaries. | *Mostly passive movement of solutes and water down their concentration gradients moves them from the tubular cell into the interstitial fluid between the tubular cells and the endothelial cells of the peritubular capillaries. | ||
**Recall that there are two sets of capillaries in the kidney: glomerular and peritubular. | **Recall that there are two sets of capillaries in the kidney: glomerular and peritubular. | ||
- | *'''Movement of these reabsorbed solutes and water molecules from the ICF ( | + | *'''Movement of these reabsorbed solutes and water molecules from the ICF (intercellular fluid) to the blood is (of course) determined by the four Starling forces''': |
**Hydrostatic pressure of the blood and colloid osmotic pressure of the ICF force solutes to stay in the ICF. | **Hydrostatic pressure of the blood and colloid osmotic pressure of the ICF force solutes to stay in the ICF. | ||
***The hydrostatic pressure of the blood in the peritubular capillaries is much lower than it was at the glomerular capillaries. | ***The hydrostatic pressure of the blood in the peritubular capillaries is much lower than it was at the glomerular capillaries. |