Answer:
(d) Counter current
mechanism in Henle's loop and vasa recta helps to maintain concentration
gradient in the medullary interstitum. Presence of such interstitial gradient
helps an easy passage of water from the collecting tubule thereby concentrating
the urine.
PCT helps in
maintaining pH and ionic balance of the body fluid by the secretion of ammonia
and potassium ions and reabsorbing 70-80% of electrolytes and water.
Collecting
duct helps in. reabsorption of water to produce concentrated urine and in
maintaining osmolarity. It also plays a vital role in maintaining pH and ionic
balance in blood by secreting and
ion.
DCT reabsorb and
water along with,
maintaining pH and sodium-potassium/ionic balance in blood by the selectively
secreting hydrogen and potassium ions.
You need to login to perform this action.
You will be redirected in
3 sec