Chapter 25. Part 2. Renal Physiology BIOL242. Other Factors Affecting GFR. Nitric oxide – vasodilator produced by the vascular endothelium Adenosine – vasoconstrictor of renal vasculature Endothelin – a powerful vasoconstrictor secreted by tubule cells. After Filtration .
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Part 2. Renal Physiology
Peritubular Capillary/ Vasa Recta)
60-70 % of Na, Cl ion reabsorption occurs here (along with water)
InterActive Physiology ®:Early Filtrate Processing, pages 3–15
If we add a transport mechanism for the red squares…
Due to osmotic pressure
There is a now higher concentration of the green solute on the left then on the right, so it will move too
Water dilutes concentration of green solute
So all it took was a channel or pump to move the red square and you ended up getting water and the green triangles too! In the body, the red square is?
Note how H+ ions can be secreted and CO2 can be converted to H2CO3 and reabsorbed
Figure 26–12 (Navigator)
Figure 26–13a (Navigator)
Figure 26–13b, c
Figure 26–14a, b (Navigator)
Figure 26–15 (Navigator)
Figure 25.15a, b