The vasa recta delivers O2 and nutrients to cells of the nephron loop

The vasa recta delivers O2 and nutrients to cells of the nephron loop

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
The vasa recta delivers O 2  and nutrients to cells of the nephron loop. The  vasa recta, like other capillaries, is permeable to both H 2 O and salts and could disrupt  the salt gradient established by the nephron loop. To avoid this, the vasa recta acts  as a countercurrent multiplier system as well. As the vasa recta descends into the  renal medulla, water diffuses out into the surrounding fluids, and salts diffuse in.  When the vasa recta ascends, the reverse occurs. As a result, the concentration of 
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: salts in the vasa recta is always about the same as that in the surrounding fluids, and the salt gradient established by the nephron loop remains in place. Figure 1. The loop is a countercurrent multiplier system in which fluids move in opposite directions through side-by-side, semi-permeable tubes. This process regulates the concentration of urine....
View Full Document

Ask a homework question - tutors are online