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Dictionary » D » Descending

Descending

Descending

Of or pertaining to descent; moving downwards.

(Science: astronomy) descending constellations or signs, that point in a planets orbit where it intersects the ecliptic in passing southward.

(Science: mathematics) descending series, a series in which each term is numerically smaller than the preceding one; also, a series arranged according to descending powers of a quantity.


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Kidneys and permeability to urea

... into the nephron, and then a significant proportion is reabsorbed in the PCT which is also permeable. The thin sections of both the ascending and descending regions of the loop of henle are also permeable, but since there is a high concentration of solutes in the renal medulla there isn't much ...

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by Babybel56
Wed May 11, 2011 6:12 pm
 
Forum: Human Biology
Topic: Kidneys and permeability to urea
Replies: 1
Views: 1847

Re: Loop of Henle and Vasa Recta

Hehe i kinda still dont understand, as I though descending loop of henle is permeable to water and it looses water and the water probably goes into the vasa recta? so how would that be possible that vasa recta then looses the salt? or does loop of ...

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by snezka18
Wed May 11, 2011 5:55 pm
 
Forum: Human Biology
Topic: Loop of Henle and Vasa Recta
Replies: 3
Views: 8291

Loop of Henle and Vasa Recta

On the descending loop the vasa recta removes NaCl and urea from the Loop of Henle whilst donating water back (about 20% of reabsorbed water has it done here). This creates a high Na+ concentration where it's needed in the medulla ...

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by Babybel56
Sat May 07, 2011 3:06 pm
 
Forum: Human Biology
Topic: Loop of Henle and Vasa Recta
Replies: 3
Views: 8291

Could you help me out with these questions?

... amounts of water. Why? 2- Fow a few seconds after riding the express elevator from 20th floor to the ground floor, you still fell as if you are descending, even though you have come to stop.Why? 3- Someone has been suffering from extreme thirst, he drinks numerous glasses of water everyday and ...

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by cetinkaya
Mon Dec 15, 2008 5:36 am
 
Forum: Human Biology
Topic: Could you help me out with these questions?
Replies: 0
Views: 1662

urinary system question.

... out most of them. the proximal convoluted tubule is where reabsorption of filtrate components occur. the loop of henle (or nephron) consists of a descending limb that allows water to leave and an ascending limb that extrudes salt. there is also a distal convoluted tubule tht recieves molecules ...

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by ecsezandohs
Mon Nov 12, 2007 5:48 pm
 
Forum: Human Biology
Topic: urinary system question.
Replies: 3
Views: 3696
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