Water balance and reabsorption Flashcards
1
Q
what is diuresis
A
loss of water in urine
2
Q
what are diuretics
A
increase water loss
3
Q
water reabsorption occurs in the _____________ ONLY thus concentration of _______ at the top is high
A
- descending limb of the loop of henle
2. filtrate
4
Q
_____ (esp___) are reabsorbed in the ascending limb of the loop of henle
A
- ions esp Na+
5
Q
what is the purpose of the varying concentrations within the loop of henle
A
to create a salty medullary interstitium to induce water reabsorption
6
Q
counter current exchange:
A
filtrate in the loop of henle and the blood in the paratubullar capillaries flow in opposite directions
7
Q
ions reabsorbed from the _________ create salty blood
A
ascending limb
8
Q
when salty blood flows by the descending limb it picks up ______ to maintain __________
A
- water
2. concentration gradient in medullary interstitium
